On generess fe birth control I was supposed to get my period over the last 4 days when I was on placebo pills. I didn't get it and was wondering why. I don't think I am pregnant since no swelling in breasts or pain in lower back or super senses when it comes to smells or tastes. I don't know if I should take a pregnancy test or not. I've been taking Generess for over 8 months now and my last period was only for 2 days. I didn't take the sugar pills, would that have something to do with no period?