Anal sex question

My boyfriend and I tried anal for the first time two days ago. We showered immediately before and after and we used plenty of lube. The only thing that might have been unsafe is we didn't use a condom but I'm on birth control and I rinsed the area thoroughly to decrease risk of infection and pregnancy(if it dripped into my vag by accident). He was a virgin before me and I get checked regularly for stds so we're definitely clean. We started slowly and it didn't hurt expect for a couple of times when he pounded a little too hard but other than that it actually felt pretty good. But after my asshole hurt so bad. It still hurts a few days later and it started burning really bad when I pooped. I'm just wondering if it's normal for it to be sore like this and will it heal soon?