The chances of getting pregnant by ejaculation depends on the period of sexual intercourse, if not in the ovulation period, the chances of getting pregnant by ejaculation is relatively small, if in the ovulation period did not do any contraceptive measures, ejaculation is possible to get pregnant, but there is no specific statistics. If you don’t have a mature egg, the chances of getting pregnant by ejaculation are relatively small, but there is no guarantee that you won’t get pregnant. If it is in the ovulation ejaculation, did not do contraception, this situation is more likely to get pregnant, generally before the ejaculation has been a small amount of sperm will be with the secretion left in the vagina, if the sperm and egg combination can cause pregnancy. It is recommended that in the absence of a pregnancy plan, sex must be good contraceptive measures to avoid accidental pregnancy.