Where does lightning crotch occur?

Jenny • 💖 Baby Girl born 10/19/19 💙 Baby Boy due 2/1/22

I’m 34+2 and just felt these intense pains in my uterine area. I was sitting on the couch and had a semi full bladder. It wasn’t dull like period cramps, it was sharp and centralized right around my uterus/pubic area.