Cramping on the day before I think I ovulate?

Allison • 28 years old, 2 miscarriages in ‘15 & ‘16. Married 💍. 💙 KJS 6/30/18 💙 BBS 4/29/22

I’m pretty sure that I got my peak opk just now. The app says that I’m due to ovulate today, but according to the OPKs I think that maybe I’ll ovulate tomorrow.

I’ve had some moderate to severe cramping all day today, similar to AF. Is that normal before ovulation? I thought cramping only came when the egg was actively being released.