TTC since Nov. 2013. I have PCOS, taking Metformin since Nov. 2014. Regular periods from Dec. 2014 - Apr. 2015. Still no sign of May period or upcoming June period. Bleeding and discomfort during sex once last week. No bleeding afterwards though. Took 2 HPTs and both negative (last week). I've had my fertility checked as well as SOs sperm count and both of us are fine. What's going on???