Itchy Bum!!!!!

I’m soo irritated right now, I don’t know if any ladies have experience this, soo lately my anal has been itchy, when I poo, and I don’t do anal, but when my bf and I have sex, he’s always talking about bend over when we do doggy style and then as he’s going at it, he will open up my butt cheeks to just go in deeper from behind, and now I’m wondering if maybe he stretch it to far apart that their might be damage or whatever, it literally started out of nowhere but after he did that few times, soo I just got out the shower and was washing my bum and now it’s itching like crazy!!’ I honestly want to cry I hope it’s nothing serious! Anyone ever had this issue???