Dear elizacharlie2013, welcome to healthcare magic. All the factors you mentioned may of course cause yeast infection. Itching is a prominent sign of yeast infection, but the yellow color of the discharge and the smell suggest another type in association. You should go to your doctor in order to examine you and define the type of infection you have. he may need to take a vaginal swab in order to reach a proper diagnosis. If this is not possible, I will assume that you have a vaginal yeast infections and here are some information about it: - It is a yeast infection which grows in moist areas of our body. - The chances of having this infection increase if you take antibiotics, are pregnant or if you use contraceptive pills containing estrogen. - It is not sexually transmitted, so it is not necessary to treat the partner. - Common symptoms include pain (during urinating or intercourse), Itching and thick whitish vaginal discharge. - Diagnosis is suspected by the symptoms and confirmed by taking a vaginal swab. - Topical creams or pessaries are a good treatment but the may cause irritation, so oral antifungals are a good alternative. - Eating yogurt or even using it in your vagina may relieve itching and may be a good treatment. - It may be more complicated if you are immune compromised ( pregnant, having diabetes...) and so, treatment may be difficult. - The following may help prevent vaginal thrush: 1- Wear cotton or silk underwear, which allows moist to evaporate, unlike nylon and other synthetic materials. 2- Wash and dry your underwear thoroughly and change it often in order to prevent dampness. 3- Avoid using feminine deodorant sprays or perfumes. I hope these words were usefull and good luck. Dr. Ahmed Bahaa.