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A 23-year-old male asked:

If a egg is available and sperm is deposited in the vagina, do fertilization start immediately? or do it take awhile for sperm to reach the egg?

2 doctor answers4 doctors weighed in
Dr. Michael Traub
Fertility Medicine 21 years experience
No: The egg must be picked up by the tube, the sperm must travel forward into the tube. Then fertilization occurs there. So usually takes a few days.
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Dr. Jay Nemiro
Fertility Medicine 47 years experience
Very quick: Studies have shown that sperm can get up into the fallopian tubes within three minutes of ejaculation in the vagina. Although the egg lives for 12-24 hrs, sperm swim from the vagina into the cervical mucous and live for 3-4 days and "shower" the fallopian tube during that period. At any one time 100-200 sperm can can found in the fallopian tube; but it takes millions to get that job done.
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Related questions

A 28-year-old female asked:
Does vagina n CM go dry immediatly after sperm meets egg?
Dr. Jeff Livingston
Obstetrics and Gynecology 24 years experience
No : Cervical mucous and vaginal moisture will not change quickly after fertilization.
Created for people with ongoing healthcare needs but benefits everyone.
A 26-year-old female asked about a 32-year-old female:
If sperm doesn't leak out the vagina does that mean she's fertile and it went straight to the egg?
Dr. Shariq Refai
Psychiatry 15 years experience
No: No that is not what it means, it means that you may not have release a significant amount enough to see it come out or leak out. Or it just hasnt come... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old female asked:
I'm on the pill and wondering after a male ejaculates how long till the sperm come out of the vagina or does it disappear and hopefully not to the egg?
Dr. John Fung
General Surgery 41 years experience
You should be ok: If you are on the pill, your body will not have produced an egg for the sperm to fertilize. Viable sperm can live in the female reproductive tract, t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old female asked about a 23-year-old female:
Used tampon one got stuck in her vagina for maybe 2 weeks she been having unprotected sex during that time..cud da sperm get da egg? Or infection possible?
Dr. Douglas Fronzaglia ii, do, ms
Internal Medicine - Geriatrics 23 years experience
Probably neither: If you had an infection, you would be experiencing severe pain, fever and vaginal drainage. It is also unlikely that your are pregnant due to the obst... Read More
Created for people with ongoing healthcare needs but benefits everyone.
View all answers
A 35-year-old female asked:
How soon does the sperm reaches the egg? Does the sperm need capacitation to fertilize the egg? How long does the sperm capacitation take? Thanks!
Dr. Neeoo Chin
Fertility Medicine 42 years experience
Answers: Sperm capacitation occurs during the travel through the cervix, uterus, then the fallopian tubes. Capacitation needs to take place prior to the sperm ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Dec 25, 2013

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