I started my last menstrual cycle on July 7th. My husband & I had unprotected sex on the 9th, 11th, 14th, & 17th. My ovulation calculator says that I am not due to ovulate until the 19th-25th...so now I'm getting nauseaus, could cry on the drop of a hat & very tired. Could I be pregnant?? Is it possible to get pregnant before my ovulation date??? Could I be experiences signs this early? I have two other kids. Thanks!