I just finished my period. I wear tampons, and a day or two in, I started to have vaginal soreness. I have had minor irritation before from wearing tampons so I thought nothing of it. But it continues. I just started birth control a month ago as well. Do I have a yeast infection. There is irritation and a little itching, but no discharge and no burning. I want to have sex with my boyfriend (we never have before) on Wednesday (and of course protected, so I'm not too worried about passing it on if I do). I've been using Vagisil and that seems to be helping. I really don't think that I have a yeast infection, but I just want to get your opinions. What is your opinion of yogurt to treat a yeast infection if that is what it is????