Pregnancy Without Intercourse
For conception to occur, healthy sperm must be placed inside a
woman's vagina, near the cervix around the time of ovulation.
Withdrawal of the penis from the vagina before ejaculation of semen
decreases the probability that sperm will enter into the vagina and
travel up to the uterus, consequently causing fertilization of the egg.
The only way to get pregnant is if the sperm fertilizes the egg via the
vagina, uterus, and finally the Fallopian tube. Therefore, any other form
of sex without penetration is unlikely to cause conception. However,
any sperm that may be in the general area of the vulva (exterior lips of
the genitalia) may work its way into the interior during the course of
Preceding ejaculation, the penis emits a small amount of fluid that is
used as a form of lubrication during intercourse. Sperm may indeed be
present in this fluid, so there is a definite possibility for pregnancy even
though ejaculation did not take place. This is the drawback of
withdrawing right before ejaculation (coitus interruptus).
As always, use a condom to lessen the chance of pregnancy and
sexually transmitted diseases.