I've had PCOS for approx 15 years. Before this year my cycles were all over the place. At the first of this year I went on birth control but stopped taking it at the end of July. On August 12 after 5 days of testing, I had a positive ovulation test. (I used Clearblue Advanced and had the "peak" day after 2 days of "high" fertility and 2 days of "low" fertility)  me and my SO bd'd 2 days before the "peak" the day of, and 2 days after. Based on my BC cycle I should have seen AF Sunday but now I'm 5 days past and nothing. I took a preg test Monday and of course it was negative. Could there still be a chance I'm pregnant? Or is this just the PCOS playing tricks on me? Oh and I need to add I've been on 500mg of Metformin for the last 5 months.