I was on antibiotics about 3 weeks ago and during that time I noticed my vagina had started to become itchy. I didn't think much of it at first, but recently it's become a bit worse. It itches at times on both the outside and inside. There is a white discharge, but not an overwheming amount. I have no pain during sex and there is no smell, though last weekend my boyfriend noticed my vagina looked a litte irritated. I bought a 3 day course of miconazole, but I'm on the second day and it doesn't seem to be helping. What could this be??? Thanks for your help