When Does The Placenta Take Over? Here’s Everything You Need To Know

How do you keep your baby together in your womb? Your munchkin might be in your tummy, but there’s something between the two of you that lets your child eat what you eat, and breathe what you breathe. This link is your placenta - the lifeline of your child. It keeps him alive.

It is one of those little wonders Mother Nature has done for you to take care of your child. You’ve probably heard it in science class, but what does it do? When does the placenta take over your body?


What Is A Placenta?


The placenta is a flat, round organ that protects the baby from antibodies and gives him nutrients, water, and oxygen. The placenta is responsible for all of these.

By means of the blood, it identifies the nutrients to give to the baby. It goes to a bag of fluid inside your tummy, called the amniotic sac, which passes through the cord that ties placenta to the baby and finally to your child’s blood vessels.

What Does It Do?

  • In case your child has built up toxins or something that will make him ill, the placenta will guard your baby by handing toxins back to your bloodstream for you to dispose.
  • The placenta has the same features of that of a shield. It protects your baby from harmful bacteria that makes him sick.
  • It analyzes which substances are useful and detrimental for him. The placenta is initially the "Guardian" and the "first nanny" of your child inside your tummy.
  • It also makes hormones that are important for you and your kid during pregnancy as well as encourages the formation of fresh blood vessels to carry oxygen to the baby. Your ovaries usually do that activity, but the placenta succeeded the job of during the conception of your kid.

During delivery, the doctor would also take out the organ since it would prove to be of no use once the baby is out the body.

When Does The Placenta Take Over?

Long before your pregnancy test showed you the positive results, the placenta has already been growing. Once the two cells bond to form another human being inside the body, it also signified the growth and formation of the placenta. It will only operate around four months or so.

Third Week Of Pregnancy

  • A follicle of your ovaries would burst and collapse and it will form as the corpus luteum.
  • As the temporary nanny of the fetus, it will provide nourishment and protection that will last all through the mother’s first trimester.
  • The corpus luteum lives up to 12 to 14 days lest it begins receiving HCG (human chorionic gonadotropin) from an emerging embryo.
  • A progesterone hormone will be made to create the lining of the uterus thick and ready.

Fourth Week Of Pregnancy

  • A mass of cells will clump into the wall of the uterus.
  • "Spotting" occurs with pregnant women experiencing a little light bleeding.
  • Some cells will separate from the clump and would float deeper to the uterine wall.
  • These cells will develop into a round-shaped organ.
  • A strong takeover of the cells to the corpus luteum will result to the formation of the placenta.

Fourth Month Of Pregnancy

  • Any small capillaries formed at the beginning will develop into larger blood vessels.
  • By the 12th week of a mother’s pregnancy, the placenta is fully functional and will take oversee the baby.
  • Your placenta will grow throughout your pregnancy and could weigh a pound or so.

Life End Of The Placenta

  • Considered as the “other delivery,” you’ll be delivering the placenta, thus, still having those contractions.
  • Doctors may hurry the process by pulling the umbilical cord or massaging your tummy.
  • When it’s out, it’s no longer useful.

A baby will have its personal placenta. Unless, you're carrying twins. While some twins have isolated placentas, there are cases like with identical twins; they can share one placenta to support them both.

Fast Facts

Are There Any Concerns With The Placenta Along The Way?

Your baby's bodyguard will have to be taken care too, just like your kid. Which means you can't do activities that are harmful to the placenta or your children like smoking or drinking.


There are some reasons why your placenta can be off at times. These happen either because of your age, blood pressure, pregnancy history and more.

blood pressure

Though as stated earlier, if you have experienced bleeding, it can mean that the fertilized eggs are attached to the uterus walls more or less two weeks after conception. This bleeding occurs around the time of your supposed menstrual period.

Thus, it's hard to know whether it's your menstruation, spotting, miscarriage or disruptive pregnancy. Even a severe abdominal or back pain can mean placental problems.

In some special circumstances, the placenta detaches itself fro the wall. When this occurs, your baby will not develop properly due to lack of oxygen and nutrients. It could also invite bacteria and will infect your child. You will also get to experience bleeding.

Mild cases happen, but it's not that much of a problem. However, for severe cases, it could mean growth problems, premature and still births to the child. When does the placenta take over then suddenly go away during your gestation term.


Fast Facts

Do you know that some people keep their placenta as a memento? Others also happen to cook it and eat it afterward. Some have donated it to make beauty products out of it. Whatever it is, when the placenta is out, do what you can with it?


How about you? When does the placenta take over? Have you any experience with an abnormal placenta growth? Tell us what you did after it was taken out from your body. Maybe we can have another article from your answers. So, comment on below!

Sarah Clark

Hi, I'm Sarah Clark. I like to write about mommies and their babies. Sometimes, even if I don’t, I like to hear stories from other mothers. I may not be an expert mommy by any means, but I am happy to share what works for mothers out there. I, for once, would like to build a community for mothers. And that's here in Giant Mommy.

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