Pain after sex

Every once in a great while when me and hubby get in the mood I end up having pain after.

Today we got in the mood and we did it doggy style so I felt him pretty good and all that. But after it hurt. It felt like a big cramp on my lower tummy. Has any one been through this? Idk what it could be. The pain lasted like 10 minutes tops. And after that I was fine just felt a little bloated.