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Question
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Is it possible for a woman to become pregnant if she's in a hot tub, bathtub,
or swimming pool with a man who has ejaculated? Thanks in advance.
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Answer
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The chance of a woman getting pregnant from a man ejaculating in the same pool
is somewhere between the chance of getting hit by lightning and a giant moose
falling from the sky (more towards the moose probability).
Let's think through what would have to occur for a woman to get pregnant in
such a scenario.
- She would have to be in a fertile period of her cycle. Given that this
only occurs for a few days each month we have lowered the chance about fivefold.
- The man would have to ejaculate pretty much directly into the water.
If he had a bathing suit on, it would absorb most of the semen.
- The semen would somehow have to float over to the woman.
- The semen would then have to enter her vagina. If she is wearing a bathing
suit, the chances of this are about nil.
- All of this would have to occur very quickly given that sperm don't survive
for very long outside of the body.
- Almost any body of water like a hot tub, pool, etc. will have chlorine,
which will kill sperm on contact.
- So, let's say that the woman is fertile, the man ejaculates directly into
the water (without chlorine) it floats over to the woman (who is not wearing a
bathing suit) and enters her vagina within seconds. One would wonder how many
viable sperm would still be in the semen. Unless the man is shooting directly
into her vagina, millions of sperm will be lost en route. Those that
make it will most likely no longer be motile, and thus will be unable to
impregnate an egg.
- But, let's say that a few live sperm make it. That is not sufficient to
impregnate a woman. Almost all sperm never survive the trip up a woman's
fallopian tubes. A man has to have several million live sperm in each ejaculation
to be considered fertile. So, what are the chances that millions of sperm would
survive this trip? Pretty much zip!
Therefore, while it is theoretically possible, I think your time would be
better spent buying a hard hat to avoid injury from that moose!
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Best,
Dr. Sandor Gardos
MyPleasure provides up-to-date and useful sexual education materials in combination
with a store that allows people to buy, try, and learn about new aspects of
sexuality. We believe everybody deserves a great sex life.
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