I was with this woman who would slip her finger inside my butthole alot of the time during sexual intercourse. She would rarely use lube or condoms and was kinda rough. It has been quite a while since then and my butthole is starting to itch really bad and it almost feels like it's coming from inside rather than around the outside at times. It is now on a nightly basis so I am geting concerned. Do you have any idea what it could be if anything?