this is a serious question... so me and my girlfriend have had unprotected sex, i know its not reccomended but oh well, anyways..shes std free and im std free but when we had sex the other day..oh by the way, i have foreskin. but after we had unprotected sex the next day i had red spots on my penis head(under the foreskin) almost as if it was inflammed or something, but it itches like hell!!!!!!! im so scared..its happened quite a few times so maybe im allergic to her, but i was reading about this and it could be balanitis or something but thats not usually caused from sex.... please help