I'm on the birth control pill so my period always lasts from Weds until Sat. On Monday I still had a light flow so I used a tampon during the day and took it out before my boyfriend and I had sex. Now, I have a rip on the inside of my lip. Has anyone else had this problem before? I can't decide if a) It's something serious like an STD, b) I ripped it from taking out my tampon or c) the condom my boyfriend and I rubbed the skin. The rip looks like a blister that has been popped, one you may find on your foot or something. Please help!!!! :-(