I have PCOS. I was able to get pregnant with letrozole, but had a miscarriage on 1/9/17. First period after miscarriage was on 2/21/17. Hubby and I said that we weren't going to try this round,...but in the heat of the moment and passion, he "forgot" to pull out on two occasions.. this only happened twice. 3/26 and 4/1....Still have no sign of Aunt Flow. Since Monday, I've been feeling tired, extra sleepy, on and off nausea, boobs feel like they're bruised, short of breath when going up one flight of stairs (when I run down 6 flights of stairs on the daily) so I took pregnancy tests. I took a test on 4/11 and one this morning 4/13 and yet both my tests show BFN. Is it possible that I'm just testing too soon?? Has anyone experienced this before? Would appreciate some comments. Thanks!