PCOS and heart-break

I was diagnosed with PCOS back in High school, never treated it until last year. I was put on metformin, got my period back to normal and so on.

I met my ex couple months after, everything was cherry on top until everything went crumbling down. My cycle was still good. After we broke up, we still see each other (rate R) purposes. We never use protection or some other protection.

Couple months ago I had a really light period, that same month I had spotting for 3 days, like super light pink and really light flow and it was days before i expected my period. But that month I didn’t get it. Took a pregnancy test (negative), couple weeks I took another one, same result. This month my period didn’t came, went to see a doctor last week and it came back negative.

My period has been messed up, my depression is peaking up, and I miss him. Idk what else to do.