A lot of cramping

MaKayla

I’ve been having cramps for about 3 days now it’s around my O time so I thought it was that but should it last 3 days? And also when I go to stand up my uterus kind of hurts? And it also happens when I bear down idk if it’s hurting or if it’s just pressure. Any ideas what it could be or why this is happening, could it just be from ovulating?