Question/Concern

My fiance and I have been ttc since November of last year. We've had absolutely no luck. My menstruation cycles are never regulated though I have a period every month. (Happens at different times, every month).

According to this app, I just finished ovulating 2 days ago.

Yesterday I really wasn't feeling well. I had a stomach ache, nausea so badly I was shaking. Then I started having really bad pinching feelings in my lower abdomen (bladder/cervix area). It would only last maybe 5 seconds at the most. And it happened twice within a 5 minute period.

Woke up this morning, nauseous again. But just a bit of cramping, no vomiting or pain. Usually my period wouldn't come for another week or two so I don't know what it is. Anyone have an idea?