So last month, my period was 3 days late and wayyy lighter than usual. I normally have a heavy flow and was not even able to fill a pad. I went to the doc and had a BFN and she said everything looked normal. This month, I started having bad cramps about 4 days before AF was due. 3 days before it was due (so the day after cramping started) I started getting light brown sporting.   This lasted 2 days and the day before it was due my period started. However it is very light again and I'm having HORRIBLE cramps. I have never cramped before AF was due and normally when I do cramp it's only a few hours and never this bad. Anyone have any ideas of what the problem could be? My doc told me to wait until I had 3 light periods in a row before going back.