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Anyone know?

Do you mean how long from the time the sperm reaches the egg does it take to fertilize? Have you ever seen the "birds & the bees" movies? It's pretty quick.

Under one second for the sperm to penetrate the egg.

the sprerm can live up to 5 day. before it hits the egg

I actually watched this program on discovery channel about the whole process. From what it said it take 24 hours for a sperm to fertilize the egg, because once the male ejaculates inside of you, the sperm actually coagulates first (and someother things, I dont recall) before it actually starts headed towards the egg, and once its gets to the egg the fertilization process takes 24 hours.

The time for the sperm to reach the egg can take about 24 hrs, but the actual time for the sperm to cross the zona pelicula of the egg is under one second.

Is it possible to have unprotcted sex and get pregnant the same day?

I've heard that you can actually get pregnant for up to 72 hours after having sex.

It is true that the sperm can live up to about 5 days...

Well.. i found a page which states an egg can live for up to 48 hrs and sperm for up to 7 days!

if you have your period and have had unprotected intercourse then 33 hrs later after intercourse you take morning after pill can you still fall pregnant

Laura, I think you are saying that last cycle you had unprotected followed by PlanB within 33 hours. Now you have a period. You are not likely pregnant, but if you are concerned, a pregnancy test will help set your mind at ease. Buy some condoms of your own and make sure they get used every time! Good luck!

if u had sex with a guy 1 day and i say a day and a half later another guy and got pregnant whos baby wpuld it most likly be if there was sperm placed after the first guy?

If both the guys were before ovulation, the second guy, closer to ovulation, would have a somewhat higher chance. If you ovulated at the time of the first sex, the egg might have been past its use-by date for the second guy, who would have had a somehwt lower chance. That's all theoretical. In fact you are not sure exactly when you ovulated, so a paternity test after the childis born is your only solution. GL!