I'm in my 20s and my doctor is about to put me on Evista. I have severe endometriosis and she and an endometriosis specialist thought it might be a good idea since I cannot take any HRTs or birth control. I still have my uterus and ovaries. She said the medication would put me into menopause but I forgot to ask that if a condom broke would I need to get the morning after pill or would I be ok not to because of being on Evista.