Sex was so painful last night I couldn’t stand up

Last night my partner and I were having sex and it was amazing...but just as we properly got into it, I had to jump off him and just collapsed. My stomach and legs were hurting so much that I couldn’t stand up properly.

My partner was obviously really worried but had no idea what to do, I just laid on the bed almost screaming from the pain.

After about an hour, the pain calmed down and we slept. I’ve woke up and it’s still sort of hurting and I think part of my mucus plug has come out.

Should I go get checked out?