After anal?

Feeling embarrassed to even post this but we did Anal last night after vaginal sex, he came inside my ass, welllll today I keep going number 2. And it hurts kinda. Should I be worried or is it because it was new? We tried it like 3/4 years ago I don’t remember feeling this way. Like immediately after I showered and I then a few hours later like had to go then went to bed woke up and went like 6 times today. Not even a lot at all. But painful.