How does Norocarmena work? Thanks to the hormones contained in these pills, women are prevented from getting pregnant. These hormones do the following: 1- It prevents eggs from leaving the ovaries, as they do every month. 2- It makes changes in the lining of the uterus other than those that occur every month to prepare the uterus to receive the fertilized egg, and thus it becomes difficult for the egg to stick to the lining of the uterus and settle in it. – Works to reduce the rates of access of the sperm to the egg by increasing the thickness of the vaginal fluid.