Ejaculation while standing is a possible cause of pregnancy. Pregnancy has little to do with whether a man or woman is standing or lying down during sex. As long as the man and woman are having sex without taking safety precautions, and the man ejaculates into the woman’s vagina, it is possible to become pregnant, and if it happens to be during the woman’s ovulation period, then the chances of pregnancy will be even greater. Some people may think that after standing ejaculation, the semen will naturally flow out of the vagina, but the semen is not all, and the sperm will swim, when it swims fast enough and into the fallopian tube and the egg to meet and combine, will form a fertilized egg, and thus successful pregnancy.