All,
So a friend of mine is planning a family and haven’t gotten pregnant yet. Her gynac said they it may happen right away or may take even a year to conceive. Well, i don’t really understand this.
If a fertile man and woman are having frequent sex, what really leads to not getting pregnant?
In: Biology
Because for a pregnancy to happen, a lot of things need to happen at the same time, and that doesn’t always happen right away:
1) the egg released by the woman’s ovary needs to be viable (if you’re under 30, about 30% of your eggs are viable. If you’re over 35, it’s more like 15%)
2) the man’s sperm needs to be in sufficient quantity and have excellent motility to survive the journey to the fallopian tubes (that’s only around 5% of sperm)
3) when egg and sperm meet, the genetic code that is created needs to be normal, with no extra or missing chromosomes
4) the egg needs to go through all the necessary stages of development in the days that follow and it needs to reach the uterus
5) the lining of the uterus needs to be sufficient thickness and healthy enough for implantation to happen
6) the corpus luteum that forms in the ovary that released the egg needs to be producing sufficient hormones to sustain early pregnancy
7) the embryo that forms needs to be genetically normal and strong and healthy enough to survive its first 3 weeks and develop a beating heart
Voilà. If you’re lucky this might all happen right away on your first try, if you’re not so lucky you might have to wait several cycles for the stars to align.
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