Ovulation cramps

Ka

So yesterday I got my smiley on my clear blue opk and my dark line in my easy @home lh test. Today I have had SEVERE cramping. I know it’s probably ovulation cramping, but my opks this afternoon we’re negative? Is that supposed to happen? To get a negative test on your ovulation day when you’re actually releasing the egg? Please help 🤦🏻‍♀️