So... I'm on month 16 of Ttc. I know I have endometriosis, but I'm wondering if I have PCOS. I started tracking my cycle July-August of 2015. I've had 27-31 day cycles. In August I had a 34 day cycle with a BFN. Then this month I have yet to start. I'm at day 39... and no signs of AF, no signs of BFP. What is wrong? What do I do?  What's wrong with me, why can't I have a baby?