Hi there, so for the past week I have had my usual AF cramps but I was expecting her to arrive about three to four days ago and there is absolutely no sign (usually I get a day or two spotting but so far this cycle there's nothing). I took an IC test two days ago which was negative. I doubt I'm pregnant as we have been trying for six months and my long cycles have been making it especially difficult to time ovulation. What could be going on?