My first time anal! AUA!!!

Ive been watching a lot of porn recently, as theres not much else you can do during quarantine. And Ive been watching myself watching a lot of anal porn when Ive been doing it myself. I took a small dildo and played around with it on my ass. When my best boyfriend visited me today and I gave him a blowjob, I asked him if he fancied something dirty. But I never thought it would hurt so much...