OPK used to detect early pregnancy?

Emily

Has anyone ever used an opk to test for pregnancy? My period is due tomorrow but I’ve been feeling crampy in one of my hips which was exactly how I felt when I was very early pregnant with our daughter. Hubs and I BD’d the both the two days before my ovulation day so it is possible (hoping so!) but I wanted to see if anyone has had LH strips successfully detect it. Picture of my LH strip from just now, on less than a 4hr hold and it’s darker than when I ovulated.

**update: I am in fact pregnant. Just confirmed with hpt