Well, I had my first PP AF in February and had three more regular cycles after that. We had decided to wait for TTC until next January / February, but I guess we weren't careful enough. We weren't really trying, but we certainly weren't trying to avoid it! At least, not hard enough. I have a very regular cycle and thought we were "safe", but I guess not! My LMP was about 5/2, which gives me an EDD of 2/6/08.