Hiya
Sorry about the BFN - I was going to suggest charting your temperature too. I have PCOS and basically through charting my temps realised I was not ovulating and had just visited a fertility specialist to discuss metformin or clomid when I got pregnant. Basically it helps to understand your body better and to know if the metformin is not working for you maybe it is time to try clomid. Does your doctor do blood tests to monitor your hormone levels throughout the month?

Hoping you get your BFP real soon honey. T.