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Question about conception
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Gary_106 posted:
It is my understanding that there is only one sperm that mates with one egg causing conception. Recently, I read on a message board that 60 to 70% of the fertilized eggs a woman carries don't survive. How can there be 60 to 70% of fertilized eggs if there is only one sperm mating with one egg?
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tlkittycat1968 responded:
They may mean over the life of a woman. I tried to get pregnant for over a year but was unable to due to fibroids. I'll bet some of my eggs were fertilized but unable to successfully implant due to the fibroids.

Let's say that the timing was right for those 12 months and every egg was fertilized but unable to implant. That would mean 100% of my fertilized eggs during that time did not survive. Let's say that I finally got pregnant the 13th month of trying. That would mean 93% of my eggs didn't survive while 7% did.
 
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Gary_106 replied to tlkittycat1968's response:
If I'm understanding you correctly, only one egg can be fertilized by only one sperm at any ONE time. Is that correct? Thank you for your reply.
 
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An_242764 replied to Gary_106's response:
Yes that is correct.

A woman is born with all the eggs she will ever have and many of those eggs never reach maturity and die. And of those that do reach maturity and are released during a mentral cycle are never fertilized and die. Which accounts for the fact that a high persentage of a woman's eggs don't survive. If a fertilized egg doesn't implant itself within a woman's uterus then it will also die. Or if it implants in the falopian tube causing a tubal pregnancy. The flapian tube is not big enough to support a growing baby causing a rupture and miscarriage of the baby.


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