It is determined that no sperm enters the vagina is not pregnant. There is a chance of accidental pregnancy during sex by taking extracorporeal ejaculation, about 1%, mainly depending on the male partner’s control during sex. Sex lasts longer although in the ejaculation, the penis pulled out from the vagina, but also can not be ruled that semen did not enter the vagina, a quality sperm may lead to pregnancy, but also may be the prostate fluid may have a small amount of sperm, there are also chances of unintended pregnancy. The chances of pregnancy without ejaculation depends crucially on whether or not you are in ovulation and whether or not there is a mature egg present, not in ovulation plus no ejaculation, generally no unwanted pregnancy will occur, there are risks in taking in vitro ejaculation during ovulation, the specific situation should be combined with your own needs, try to take safer measures and means, do not let yourself get pregnant accidentally, resulting in physical and mental damage.