Weight Gain During Pregnancy


Weight gain in pregnancy varies from one woman to the next depending on what weight she was before she started her pregnancy. If you are classed as normal weight for your height, then we expect that you are going to gain about 25-35 pounds during your pregnancy. If you are underweight to start, then we are looking for you to gain about 28-40 pounds in your pregnancy. If you are really overweight, you may even loose some weight during pregnancy because the hope is that you will be eating healthier and exercising regularly.

Where does all of this weight come from? First look at the baby. The baby is going to weigh 7-8 pounds at the end of pregnancy. Secondly, the increase in breast size is going to be an extra one to three pounds. The womb (uterus) where your baby is growing,  is about two pounds. Inside the womb is a bag of water that the baby sits in, which is the amniotic fluid. This water itself weighs about two pounds.

You also have a huge organ growing inside you called the placenta. The placenta is the feeding tube for your baby. Everything that you eat and drink during your pregnancy comes from your blood supply into the placenta. It is filtered and goes along the umbilical cord. The umbilical cord is the long tube that connects to your baby’s belly button. The baby gets rid of all the waste products, takes in its oxygen, takes in its blood supply, and has all the hormones that needs to grow and develop normally.

The placenta itself can weigh about a-pound-and-a-half. By the time you are 34 weeks pregnant, your entire blood volume within your body has increased by 40%, which can weigh another 3-4 pounds, and on top of that, you need to have a lot of extra fat laid down around your body and this fat helps to give you a lot of energy after the baby is born.

So, all in all, we are looking at a normal woman who is going to gain between 25 and 35 pounds during pregnancy. My advice to you is to be very conscious of what you eat and be very conscious of your weight gain. Talk to your Provider to see that you are on target. The more you are informed and the more educated you are about the pregnancy, the higher probability is that everything will go well for you.

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