Ovulation cramps?

I get cramps at random times during my cycle. Normally I get them a day or two before my period (and then a day or two at the start) and during ovulation. Those I understand are normal. But now I’ve started getting them right after my period ends. Not bad, just a little discomfort. And it’s not every month. Does this happen to others? Background: I’m 37 and have never been on BC, no kids.

And before you say to just go to the doctor, I’ve been to three and have spent $300 in copays on this already. First doctor said “that’s just the price of being a woman.” Second said I was just looking for attention. And third said I was drug seeking. I don’t want drugs, I want a resolution. None of them did any tests. I can’t keep paying $100 just to be called a liar.