I've worked with a few women for this reason. Kambo cleans out the uterus and prepares it so that the embryo can embed properly. I try to time the treatment in the last few days of the woman's menstruation. Bleeding usually increases because Kambo is a vasodilator but the uterus is thoroughly cleared out. Helpful if you have Endometriitus or similar problems. I don't recommend using Kambo if you are trying to get pregnant though