I have a questionable ailment...I've developed a rash the day after my boyfriend and I have had sex but we've been together for 3 years, lost our virginity together and stay monogamous. So I can't see any risk in any STIs although I am planing to get a check-up soon. The rash is around my vaginal area but also near my bottom. I'm guessing I'm allergic to the latex or lube used or it could be because I shaved...should I be worried? Thank You