So about 4 days ago I noticed a discomfort in my anus, like on the cusp. i didnt think anything of it, but it hasent gone away, I cant really say its painfull because its not really, i only feel it when i sit in one spot for too long.. im not bleeding, i dont bleed when i poop, it doesnt really hurt to wipe, ive trip looking and i havent really noticed anything wrong besides maybe some redness.. what copuld it be?