personal question! so me and my partner were having sex ( i was on top) and I caught a cramp on my…

personal question! so me and my partner were having sex ( i was on top) and I caught a cramp on my lower abdomen .. it felt like a muscle cramp not a menstrual .. my baby girl is head down and I thought maybe it would be her head lodged in my left lower side of my pelvis ..does that sound about right or is it a common thing ?😅😅