Do you use OPKs at all?
How long is your usual cycle? As a general rule, you ovulate about 14 days before AF is supposed to show, sometimes as many as 16, but not more than that. The luteal phase (which is the time between ovulation and AF) is 12 - 16 days if it's healthy. Shorter, if there is a problem with hormones, and longer if you're pregnant (because AF never shows, of course!
).
My average cycle is 35 days, and my Luteal Phase is 15 days. Therefore, I generally ovulate around CD 20.
If your cycle was a 28 day cycle, and your Luteal Phase was 14 days, you'd ovulate around CD 14. You could feel cramping and pinching a few days prior to that and a few days after, too. It just depends on how many developing eggs you have.
And if you're on clomid, I know a lot of gals who say that that medication makes their ovaries pinch pretty frequently, even when it isn't O time yet.
Here are some articles on the luteal phase that might help you.
https://www.yourdays.com/luteal-phase.htm
https://www.fertilityauthority.com/...e-defect-lpd-its-causes-and-affects-fertility
https://blog.kindara.com/blog/what-is-a-luteal-phase-and-why-is-it-important