Irregular & Regular Periods.

For as long as I can remember I have always been extremely regular with my AF. But ever since I've been off of BC since Novemeber 2013. I have become irregular and then in the last 2-3 months I've been regular. Last time I had AF was August 4th and I've tested and just got a BFN. It's extremely frustrating especially TTC#1 and everyone around me is getting pregnant. I made an apt with my GYN for Oct 8. But I just wanted to see if this has ahhpened to anyone else.