I was on Femara CD 3-7 then Estradiol 10-12 and Progesterone, 200 mg twice a day after O. I should be starting AF tomorrow and I've been cramping off and on yesterday and today. I took an HPT this am and it was negative. I normally only cramp starting the day of AF. Is worse cramping normal with all this? It doesn't really feel like normal AF cramps either, more like twinges or something.