Yeasts are fungi found in almost 70% of normal women vaginas. This fungus lives in the vagina/vulva where the conditions of its growth are quite suitable: humidity, acidity, and a temperature of 38 degrees Celcius. It lives in peace with its neighboring microorganisms and they all do share the same medium: your vagina. When the number of yeasts overcomes the number of other microorganisms, problems urge. In more than 75% of the cases, the infectious agent is Candida albicans. In 20% to 25% of the cases, we can see other species of the same fungus: Candida glabrata and Candida tropicalis pretty well resistant to common medicinal drugs. The next figure shows what a Candida looks like under microscope.

To diagnose a yeast infection, the gynecologist will examine the vagina and/or vulva that will show discharge and some degree of redness, swelling, and tenderness. There is an absence of "lumps, bumps, or craters," which might suggest warts, herpes, or other diagnoses. He will take a small sample of the thick, "curdy" discharge from the vagina or vulva and examine it under a microscope. About 80% of infected women will have yeast organisms visible on microscopic exam. A measurement of pH (acidity) of vaginal fluid also can be done to exclude other diagnoses. A woman with a yeast infection will usually have a normal pH unless she also has other infections.

No vaginal medications or douches used two days prior to the medical exam are asked by the gynecologist. This is because these chemicals obscure the signs of infection looked for.

During the treatment phase, patients are asked not to have any sexual intercourse. Antifungal medications are usually effective against uncomplicated yeast infections. Creams or suppositories work equally well when applied directly to the genital area. It's important to use the medication for the full treatment course (usually seven days) to avoid a relapse. In cases of extreme discomfort, a corticosteroid cream can be added.

These medications can be used without concern during a pregnancy. A longer treatment course (ten days instead of seven) may be necessary if the woman is pregnant since pregnancy promotes the growth of yeast.

Some medications are too strong for the body such as Flunazole. Refer to your doctor for further details.

Yeast infection may be recurrent in the following cases:

Nonspecific vaginitis, haemophilis vaginitis, and corynebacterium vaginitis all refer to the same disease: Bacterial vaginosis. Each of the names mentioned above refer to a specific type of bacteria, consequently it is a multi-microbial disease. Also note that the vagina is not a sterile medium: bacteria and fungi are always there. However, it is the increase in the number of one of these bacteria that causes the infection that can occur at anytime in a woman’s life. The next figure shows an infected vagina.

No, it is not hereditary; it is caused by a protozoan known as Trichomonas vaginalis that is transmitted through sexual intercourse. This infection makes up 5-10% of total vaginal infections. The next figure shows the Trichomonas vaginalis parasite adhering to vaginal epithelial cells collected from vaginal swabs. A non-adhered parasite (right) is pear-shaped, whereas the attached parasite is flat and amoeboid. 

Herpes is a sexually transmitted disease (STD) caused by the herpes simplex virus (HSV). It is more common in women (1 out of 4) than in men (1 out of 5) possibly because male to female transmission is more efficient than female to male transmission.

Herpes virus is of two types: HSV-type 1 that causes fever blisters on the mouth or face (oral herpes) and HSV-type 2 that typically affects the genital area (genital herpes). However, both viral types can be inactive or 'silent' causing no symptoms, cause either genital or oral infections, cause 'outbreaks' of blisters and ulcers. People can remain infected for life after the first initial episode. The figures below shows oral and genital herpes.

Herpes is spread by direct contact including anal sex, oral sex, vaginal sex, kissing, and skin-to-skin contact which transmits HSV-1 and HSV-2. Genital herpes can be transmitted with or without the presence of sores or other symptoms. It is often transmitted by people who do not realize infection can be passed on even when there are no symptoms, and people unaware they are infected.

Symptoms vary, but often most people have no noticeable symptoms. Early symptoms may include burning sensation in the genitals, flu-like symptoms, lower back pain, and pain when urinating. Small red bumps may appear in the genital area after initial symptoms, which later develop into painful blisters. These latter crust over, form a scab, and heal.

Genital herpes symptoms usually develop within 2-20 days after contact, but could continue up to 2 weeks. The first infection may be so mild it goes unnoticed. In other cases, the first attack causes visible sores. Subsequent recurrences of the virus may cause an outbreak of blisters.

The virus retreats into the nerves and lies dormant. Even when there are no symptoms of herpes, transmitting the virus is still possible (asymptomatic viral shedding). Healing of the skin does not normally leave scarring. 

When it gets into skin cells the virus reproduces itself and starts to multiply, making the skin red and sensitive. Blisters or bumps may appear on the genital area, the blisters first opening and then healing with the regeneration of new skin tissue.

During the outbreak the infected area may be painful with burning, itching, and tingling sensations. Other symptoms include fever, headache, infection of the urethra causing a burning sensation when urinating, muscle ache, painful inflamed blisters which develop around the infected area, swollen lymph glands vaginal or penis discharge.

The first episode is the most severe, with most episodes lasting 10-21 days.  A warning sign (prodrome) such as tingling is experienced by many people in recurring outbreaks.

Should any of these symptoms occur, consult your doctor immediately. 

Genital herpes should be diagnosed and treated professionally.

Gonorrhea is spread through sexual contact like penis to vagina (infection rate for males 30-50%, females 60-90%), penis to mouth, penis to rectum, mouth to vagina.  

It can also be transmitted to your baby during pregnancy as the child passes through the birth canal during delivery causing eye infections and possible blindness. This is why you have to follow up this case with your gynecologist and take it very seriously. Also note that you can spread the infection to another area of your body by touching the infected area and transferring the excretions. Your clothing or wash cloths can also spread the infection.

Based on your question, I cannot tell how you got Gonorrhea. It might be that your husband transmitted it to you. If not, then you got from somewhere else, and you might be transmitting it to him. For you to figure out which of these cases might be yours, you can find below some guidelines for the symptoms of Gonorrhea in men and women.

In Men:

• Creamy or green, pus-like discharge from the penis
• Painful urination (burning sensation)
• Testicular pain

In Women:

• Bleeding between periods
• Creamy or green, pus-like or bloody vaginal discharge
• Excessive bleeding during menstrual period
• Irritation of the vulva
• Lower abdominal pain 
• Painful intercourse
• Painful urination (burning sensation)
• Rectal infection
• Throat infection 

 Rectal infection:

• Constipation
• Creamy, pus-like discharge
• Itching
• Painful bowel movement with blood in feces
• Rectal bleeding

Symptoms usually appear 2-7 days after infection in males, but it can sometimes take up to 30 days for symptoms to appear.

Often there are no symptoms at all in:

• 10-15 % of men
• 80% of women

People with no symptoms are at risk of developing complications from Gonorrhea and can unknowingly spread the infection.  

From the time of infection Gonorrhea can be spread and will continue to be spread until properly treated.

Past infection does not make a person immune to Gonorrhea and previous infections with Gonorrhea may allow complications to occur more rapidly and increase your risk of getting HIV.  

Gonorrhea also has long term complications: In men it can cause epididymitis, an inflammation of the testicles that can cause sterility. In women, it can cause abscesses, ectopic pregnancy, a pregnancy outside of the uterus, Pelvic Inflammatory Disease (PID) which is an ascending infection that spreads from the vagina and cervix to the uterus and fallopian tubes, which can lead to sterility, perihepatitis (an infection around the liver) and sterility.

To avoid Gonorrhea:

First of all you have to know that anal sex in general does transmit many types of STDs and is not really a healthy way of having sex especially without the use of condoms. Since you asked about syphilis only, here are the informations that I find most valuable for you to know.

Syphilis is a sexually transmitted disease (STD) caused by a worm-like, spiral-shaped organism that is a spirochete called Treponema pallidum. The initial infection causes an ulcer at the site of infection such as the penis, the vulva, and sometimes hands and feet.

The disease is divided into four stages: primary, secondary, latent, and tertiary (late).

An untreated infected person may infect others during the first 2 stages (1-2 years). 

Even though untreated syphilis is not contagious in the late stage serious complications can occur such as blindness, mental disorders, neurological problems, serious heart abnormalities and death.   

In an infected person the bacterium spreads from the initial ulcer to the skin or mucous membranes of the anus of a sexual partner, the genital area and the mouth. The bacterium can also pass through broken skin on parts of the body. The syphilis bacterium is very fragile and infection is usually spread by an infected pregnant woman (who can pass the bacterium to her unborn baby which can result in the child being born with serious mental and physical problems) and sexual contact.

The primary syphilis shows an ulcer (a chancre) within 10 days to 3 months after exposure, but usually within 2-6 weeks. The chancre may be painless and can remain undetected inside the body, so may go unnoticed.

The chancre usually appears on the part of the body exposed to the partner’s ulcer, such as the anus, the cervix, the lips, the penis, the tongue, the vagina, the vulva and other parts of the body.

These usually disappear within a few weeks whether treated or not.  If left untreated during the primary stage, about one-third will continue on to chronic stages.      

The secondary syphilis shows a rash of flat, red lesions over the whole body (including the palms of the hands and soles of the feet), fever, swollen glands, broad-based papules (lumps or warts) in warm moist sites, and mucous patches or snail-track ulcers in the mouth, appearing from 3-6 weeks after the chancre develops.

Active bacteria are present in the sores, so physical contact (sexual or nonsexual) with the broken skin of an infected person is not recommended as transmission of the disease is possible. After several weeks or months the rash seems to heal itself. 

Other symptoms such as fatigue, headache, mild fever, patchy hair loss, sore throat, swollen lymph glands throughout the body also may occur but will usually disappear without treatment.

The secondary stage of secondary syphilis appears 2-4 months after infection, lasting several weeks and often recurring in the following 2 years and can come and go over the next 1-2 years.  

The latent stage syphilis is caused by T. pallidum that persist in the infected person's body without causing symptoms or signs. Latent syphilis is subdivided into: early (initial infection occurring within the previous 12 months), late (initial infection has occurred greater than 1 year previously), and unknown categories. 

The late syphilis that appears after 15 – 30 years of untreated infection (which nowadays theoretical) concerns to 30% (minority) of individuals. The lesions can be benign, causing no serious disability, or they may involve the brain, eyes, nervous system, joints, and spinal cord (neurosyphilis where the bacteria invades the CNS ) as well as heart and blood vessels (cardiovascular syphilis), producing severe complications resulting in blindness, heart disease, mental illness, other neurological problems, and death. 

Some syphilis cases (especially latent or late stages) need to have a lumbar puncture (spinal tap) to check for infection of the nervous system.         

Other clinical signs include inflammatory lesions of the bones, cardiovascular system and skin. Occasionally the affection can hit the abdominal organs, eyes, lymph nodes, mouth, reproductive organs, upper and lower respiratory tracts.

Late syphilis usually becomes apparent after 15-30 years of untreated infection.

Syphilis is treated with penicillin, usually administered by injection. A person no longer usually transmits syphilis 24 hours after beginning treatment. People with an allergic reaction to penicillin should seek medical advices.

Nowadays, the genome of T. pallidum is sequenced, and highly specific antibiotic and vaccine are now under final testing.

Chlamydia infection can occur in the pharynx (throat) from oral-genital contact (oral sex and swallowing infected cum). The infection can be spread to the eyes causing inflammation of the lining of the eye (pink eye). In tropical climates, a particular strain of C. trachomatis causes an STD called Lymphogranuloma venereum (LGV) which can get into the skin through tiny cuts.  

After months or years it can spread to other lymph nodes causing pain, proctitis (inflamed rectum), skin breakdown (ulceration), and swelling.  

In order to prevent it, keep in mind the following rules:

• Abstinence is the only way to be 100% sure of protection from Chlamydia and other sexually transmitted diseases
• Drugs reduce your ability to make sensible decisions, such as becoming sexually intimate when drinking alcohol and/or taking drugs
• Condoms or diaphragms should be used during sexual intercourse anal, oral, and vaginal.
• Form a monogamous relationship
·   Be tested before you have sex.
·   Both partners are faithful.
• Limit your number of  sexual partners
• Persons who have more than one sex partner, especially women, should be tested regularly.
• Regular check-ups for STD's
·   Do not wait for symptoms to appear.
·   Testing should be part of your regular examination.

The definition of AIDS relates to CD4+ T-cells Count:

• Healthy adults usually have CD4+ T-cell counts of 1,000 or more.
• Aids and some HIV sufferers have less than 200 CD4+ T-cells.

Clinically, there are over 26 clinical conditions affecting people with advanced HIV disease. These conditions are usually opportunistic infections, which can sometimes be fatal because the immune system is so damaged by HIV that it is unable to fight off certain bacteria, viruses and other microbes. 

AIDS is caused by a virus called HIV. It stands for Human Immunodeficiency Virus; It infects the immune system (preferably the T4 lymphocytes) and destroys the body's ability to fight off infections. HIV may also enter a cell then remain quiet for a long time and drug therapy only destroys the active virus.

HIV can been located in fluids such as: blood, breast, milk, saliva, semen, tears, and vaginal fluids.

The disease can only be transmitted through: bloods in direct contact (blood transfusion, ear piercing, and tattoos), unsafe sexual intercourse (vaginal, anal, and oral sex between gays, lesbians, and straight), infected medical tools (syringes), and pregnant mother to her baby (during pregnancy, birth or breastfeeding).   

People can be infected and NOT look sick or even have AID but can still transmit HIV. This is a problem for drug therapy because drugs destroy the virus while it is active.

HIV does not spread through feces, sweat, tears, urine, biting insects such as mosquitoes or bedbugs, sharing of bedding, sharing of food, utensils sharing of towels, swimming pools, and telephones. 

There is no risk of transmission through donating blood when sterile needles are used,    embracing or cuddling,  kissing without exchange of saliva, sharing utensils, touching an HIV infected person, or through touching objects such as clothes, door knobs, and toilet seats.       

Opportunistic infections common in people with AIDS cause such symptoms as abdominal cramps, coma, coughing, difficult or painful swallowing, extreme fatigue,   fever, lack of coordination, mental symptoms such as confusion and forgetfulness,     mouth ulcers in the genital region, nausea pelvic inflammatory disease, persistent or frequent yeast infections (oral or vaginal), persistent skin rashes or flaky skin, seizures,  severe and persistent diarrhea, severe headaches, shortness of breath, sore throat, sweats,   swollen lymph glands, weight loss, vision loss, vomiting  as well as severe Herpes infections causing anal sores, genital sores, mouth sores, and a painful nerve disease. AIDS sufferers commonly develop various cancers caused by viruses such as cervical cancer and Kaposi's sarcoma, and lymphomas which are more aggressive and difficult to treat in AIDS sufferers and which appear in light-skinned people as round brown, reddish or purple spots which develop in the skin or in the mouth.

People with AIDS may experience phases of intense life-threatening illness followed by phases of normal functioning. However, many people are too debilitated by the symptoms of AIDS to hold steady employment or do household chores.  

Less than 50 people first infected with HIV over 10 years ago have not developed symptoms of AIDS. Studies are being undertaken to determine the causes for this, such as:

• Genetic make-up which may protect them from the effects of HIV.
• Particular immune system characteristics.
• Whether the infection was a less aggressive strain of the virus.

AIDS can lay dormant until years after infection, and in untreated cases the average time for the disease to develop is 10 years or more. 

HIV infection is also associated with an acute illness in most infected persons. This illness, called acute HIV infection begins within 1-3 weeks of exposure, and usually involves a combination of symptoms.  Period of asymptomatic infection is highly variable with some people:

• beginning symptoms within a few months
• having no symptoms for 10 years or more
• having symptoms resolve themselves within 1-3 weeks 

At first glance the virus rapidly spreads into the body organs especially lymphoid organs and causes few discomforts. This is the seroconversion phase.

During the asymptomatic phase, HIV attacks lymph nodes and the cells (see figure) where it grows and multiplies without causing symptoms.  

During the symptomatic phase, it actively multiplies and spreads in the blood (viremia). It infects and kills the immune system cells causing a decline in blood levels of CD4+ T cells (T4 cells), the immune system's main infection fighters.

During the end stage, the virus keeps on destroying the immune system and leaves the body short of any immune barrier. At this time, opportunistic diseases find their easy way to the weak body and cause death.

Standard blood test becomes positive about 4-6 weeks after infection.  HIV is mainly detected by testing a blood sample for the presence of antibodies (disease-fighting proteins) to HIV. HIV antibodies generally do not reach detectable levels until 1-3 months following infection, sometimes taking up to 6 months to be generated in large enough quantities to show up in standard blood tests (ELISA, Western Blot). HIV testing is also carried out on samples of saliva and urine. 

To prevent AIDS, the following guidelines must be considered:

• Abstinence from random sex: be faithful to one sexual partner.  
• Use of male latex condoms whenever having oral, anal or vaginal sex is recommended for protection.
• Use male or female latex condoms during sexual intercourse.  
• Use of water-based lubricants should be used with latex condoms as they allow an easier penetration thus reducing the possibility of the condom’s damage.  
• Do not use an open syringe unless you open the pack yourself for any reason whatsoever.
• Be sure the medical tools (dentist for example) to be used are sterile.

Do not forget it is your RIGHT and DUTY to act properly to save your life.