Orgasm & lying down after sex to improve conception?

has anyone had this help or not help or heard of it from anyone else that it did/didn't help? I've got a good friend in Colorado whom is a nurse, she works in NICU and she said an orgasm will help relax the cervix so that sperm can make it into the uterus easier? I've also been lying down for about 5 mins after my husband and my encounter (also put a pillow under my buttocks) to help w/conception but we've been @ this for a few months and nothing yet. any advice? Im on folic acid everyday as well :)