The lack of ejaculation can lead to pregnancy, but the probability is extremely low, because the male urethra before ejaculation will be part of the secretion, its secretion is mainly prostate fluid, but may contain a small amount of semen, this part of the semen into the vagina of the female may lead to pregnancy. Pregnancy is the combination of sperm and egg to form a fertilized egg, and the fertilized egg will be pregnant after it is deposited, so pregnancy must have the combination of sperm and egg, no sperm will not be pregnant, no egg will not be pregnant. The probability that coitus without ejaculation will lead to pregnancy is very low, if you suspect pregnancy, you can observe whether the menstrual period is delayed, if there is a delay in the menstrual period after coitus, you can carry out early pregnancy tests such as urine HCG, blood HCG, ultrasound and so on to make a clear diagnosis. If you do not intend to get pregnant, it is recommended that you use contraception during intercourse.