Sharing soap does not usually result in pregnancy. Pregnancy requires sperm to enter a woman’s vagina, then the sperm combines with an egg to form a fertilized ovum, which finally settles in the uterus. Therefore, pregnancy is a complex process that requires both men and women of childbearing age to be sexually active and not using contraception, coinciding with the woman’s ovulation in order to have the possibility of pregnancy. Sharing soap makes it difficult for sperm to enter the woman’s vagina and pregnancy does not occur. Normal sex, each male ejaculation can be discharged tens of millions or even up to 200 million sperm, sperm into the female vagina need to pass through the vagina, cervix, uterus, fallopian tubes and so on in order to meet with the egg, and ultimately able to reach the tubal fertilization parts of the sperm left. Even if there are sperm on the soap, it is difficult to pass these hurdles, and women naturally can not get pregnant.