### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, Ive been suffering from vaginal yeast infections for the past 2 years.  I experience this in the last few days of my period. My period is usually more brownish in the last few days and it gives me a severe stinging sensation whenever I pee and sex is completely out of the question. Even after my period the burning remains until I take some vaginal pessaries such as canesten. The creams do not help at all, only the pessaries seem to cure me from the burning. But then comes the next period and I have to go through this again. It seems that my period is acidic or something like that and I do not know what I can do :/ Im 19 and do not suffer from anything else. Thanks!

### output:

Welcome, Yeast is a fungus that normally lives in the vagina in small numbers. A vaginal yeast infection means that too many yeast cells are growing in the vagina camera.gif. These infections are very common. Although they can bother you a lot, they are not usually serious. And treatment is simple. Yeast can grow too much and cause symptoms. A yeast infection causes itching or soreness in the vagina and sometimes causes pain or burning when you urinate or have sex. Some women also have a thick, clumpy, white discharge that has no odor and looks a little like cottage cheese. These symptoms are more likely to occur during the week before your menstrual period. You can treat yourself at home with medicines you can buy without a prescription. You can use an antifungal cream, or a suppository that you put into your vagina, or antifungal tablets that you swallow. If your symptoms are mild, you may want to wait to see if they clear up on their own. Take care.