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  • Pregnancy is a pretty amazing process.

  • It all starts with a sperm and an egg.

  • Sperm are tiny microscopic cells

  • that are made in testicles.

  • Sperm cells mix with other fluids to make semen

  • which spurts out of your penis when you ejaculate.

  • Eggs live in ovaries.

  • And the hormones that control your menstrual cycle

  • cause eggs to mature every month.

  • These hormones also make the lining of you uterus

  • thick and spongy to prepare for a possible pregnancy.

  • Every month, one mature egg leaves your ovary.

  • This is called ovulation.

  • That egg travels through your fallopian tube

  • which takes about 12 to 24 hours.

  • If semens get into your vagina,

  • sperm can swim up through your cervix, uterus, and fallopian tubes,

  • searching for an egg.

  • Sperm cells can live in your body for up to six days,

  • waiting for an egg to show up.

  • Millions of sperms come out during each ejaculation,

  • but it only takes one sperm to meet with an egg

  • which can lead to pregnancy.

  • When a sperm cell joins with an egg,

  • it's called fertilization.

  • After that happens,

  • the fertilized egg begins to divide into more and more cells

  • and moves towards your uterus.

  • The ball of cells get to your uterus

  • about three to four days after fertilization,

  • where it can float around for another few days.

  • If the ball of cells attaches to the spongy uterine lining,

  • pregnancy officially begins.

  • This is called implantation.

  • It usually takes around three to four days to finish implanting.

  • Up to half of all fertilized egg naturally don't implant.

  • They passed out of your body during your period.

  • When the ball of cells implants into your uterine lining,

  • your body starts making pregnancy hormones.

  • These hormones keep your uterine lining in place

  • so it can nourish the pregnancy.

  • That's why you don't get your period

  • when you're pregnant.

  • But if sperm and egg don't meet up

  • or a fertilized egg doesn't implant into your uterus,

  • the lining isn't needed

  • and it flows out of your vagina.

  • That's your period.

  • So it actually takes a lot of steps

  • and up to two - three weeks

  • for pregnancy to happen.

  • Want to learn more about pregnancy?

  • Check out

Pregnancy is a pretty amazing process.

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How Does Pregnancy Happen | Planned Parenthood Video

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    Flora Hu posted on 2018/01/30
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