This is not my first time having sex, I have had it a few times before. But I recently have had a new boyfriend and we have a lot of sex, and Its really rough sometimes... Also, the last time I had sex before my recent boyfriend was 10 months before me and my recent boyfriend had sex. Me and my recent boyfriend have been sexually active for almost 3 months. He has been tested and has no STDs. I have already had a yeast infection about a month or a little over a month ago. But about 4 days ago while we were having sex it burned so bad I has to stop. The next day we tried again and the same thing happend, and I had an even worse burning after. It still burns sometimes and kinda itches. And my vagina was really red. I don't know if its from have sex a lot? I don't know what to do or what it is HELP!