ugh another month BFN

Just need to vent. My husband and I are ttc for a year now. I have PCOS and don't ovulate regularly but I did this month I did! We baby danced as often as possible around my fertile window. AF was suppose to come yesterday so I began to get excited (since she hasn't shown up)  but so far two BFNs when I tested and no symptoms. Frustrating :( I start letrozole after my next cycle but I was hoping for a little miracle. Any encouraging and positive stories ?