So my bf and I had sex the day I finished my period (Sunday), and then the next day (Monday) I was a little itchy. It wasn't too bad and I figured it was just from having a little too much fun, but now it's super, super itchy down there. I've had a yeast ingestion before, but could that really happen so soon after having sex? We're both clean, have been together for 2 years, and I'm on birth control. Please help!