Question about pinching feeling

Tami

I’m not exactly sure when I ovulated this cycle but I’ve had this pinching feeling off and on for 3 days now that is in the center of my uterus. It’s too early to be implantation (according to Glow my period is due on the 26th) but it’s not a normal feeling for me at ovulation..does anyone know what it could be? Also I’m postpartum 13 months now, my cycle has been back for 5 months now and it has been all over the place 25-37 days