Abdominal pain after ovulation/during sex?

Hey ladies.

My boyfriend and I aren’t “trying” because neither of us want the stress and disappointment. It’s more of a “if it happens, then that’s great” type of thing if that makes sense.

We had sex a few times during my fertile window and on my ovulation day. We had sex Wednesday night and in the middle of it, my lower back and abdomen really started to hurt. The only way I can think to describe the pain was like constipation, but I’m not constipated. I’ve pooped since then and it still feels off. It hurt but it was mostly uncomfortable. We had to stop because I couldn’t get comfortable. Ever since that night, my lower abdominal area has been uncomfortable and I’m not sure why. Has this happened to anyone else? If so, do you know why and what did you do? Thanks in advance!!