!!!!TMI!!!

So a couple nights ago (Saturday May 6th) I had to go poop, so I went to the bathroom and it was a normal poop like it wasn't diarrhea or anything close to that, it was a solid poop.... after I was done my butt really hurt me, it felt sore and uncomfortable every time I walk or sit... now two days later (Monday may 8th) it still hurts and I don't know why! What could it be? Sorry for all the info I know it's tmi