So AF is due today... I've been having cramps off an on for a little over a week. Yesterday and today the cramps have been almost constant but I only have a very small amount of brown discharge... like my period is trying to start but isn't. Usually I start the morning of AF scheduled arrival date without a problem. Took a  early response HPT 2 days ago BFN. Am I just running a little late? Could this be something?