I too have just started taking Femcon about a week and a half ago... I had just started when I began taking it. I had a regular period and then started again yesterday. I am bleeding heavy and have horrible cramps. My doctor gave me this as a sample because he was out of Estrostep what I usually take. I was in a car wreck a few weeks ago and was unsure of whether or not my headache were from that or the BC... I like the convenience but the side affects seem to out weigh the good. I don't believe ill stay on this one.