Pcos and ttc

So I have been diagnosed for almost a year now. My SO and I have been trying to have a baby for 8 months and the doctor had me on metformin for 4 months so far and my periods have been regular till now. My last period was may 5th, and I have been testing every week until last week when I finally called my doctor and told her that I still have not had a period and I would like the provera. Fast forward to yesterday and I had an urge to take a test just because I have mild cramping on and off for weeks now and suddenly feeling really tired after work. Ladies give me your honest opinions. Do you think this is it or just an evap line.