Many couples have difficulties or do not know what to do during menses, as they want to have sex. Let me start by breaking down what is menstruation or menses as is commonly referred to, is the shading off of the lining of the womb (uterus) some call it "cry of a disappointed uterus".
Going in a circadian motion after the implantation failed to take place hormones signal the failure and trigger the expulsion of the lining of the uterus. So the blood evacuated is fresh and pure. I can emphatically debunk all myths surrounding this happening every month.