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Week 3: Conception

Katie de Klee
All you need to know about conception, what changes to expect, and some great tips for the week ahead.
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5 things to look forward to this week:
1.     An egg is released.
2.     Your basal body temperature rises.
3.     Sperm meets egg.
4.     Fertilisation!
5.     Your fertilised egg makes its way to your uterus.
How your life will change this week:
Some time early this week conception could occur. Around the 14th day of a normal 28 day cycle your ovaries will release a mature egg into the fallopian tube, which can be fertilised within a 12 to 24 hour period. Your basal body temperature will rise by about one degree when you ovulate. To fertilise the egg, one of the 350 million sperm that your partner releases must pass through the vagina, the uterus and down the fallopian tube. It’s quite a journey for the little guys!

Once an egg has been fertilised, it will move along your fallopian tube to your uterus, where it will make its home for the next nine months.

Your baby’s development this week:
One sperm will penetrate the egg, and once that happens no other sperm can get through the membrane. The egg and the sperm fuse into a zygote and now have the 46 necessary chromosomes to form a human.

The zygote splits rapidly in half to form two cells, then four, then 8 until it becomes a cluster of about 60 cells called a blastocyst. The blastocyst moves down the fallopian tube and implants itself on to the wall of your womb.

This week’s To Do list:
  • Have plenty of sex with your partner.
  • Keep an eye on your basal body temperature to pinpoint when you’re ovulating.
If you have 5 minutes… Pregnancy top tip.
It may be an old wives’ tale, but it certainly can’t hurt to lie flat with your legs raised after you have had sex. This allows gravity to make the journey of the sperm easier.

Curious about next week?  
Click here to find out what happens next week… And the week after.

Share your thoughts and concerns
Chat with other Moms-to-be in your area or at the same developmental stage as you in BabyGroup Forums.

BabyGroup says…
This article has been checked by Dr Paul Le Roux, Fertility Specialist. A member of the BabyGroup Medical Council.

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