Dismiss Modal

Symptoms

Hormones During Pregnancy

Choose a preferred language


What is the role of hormones during pregnancy?

Many hormone levels are affected in the body during pregnancy. Several hormones play major roles during pregnancy. These are:

  • Human chorionic gonadotropin hormone (hCG). This hormone is made only during pregnancy. It is made almost exclusively in the placenta. HCG hormone levels found in the mother's blood and urine rise a lot during the first trimester. They may play a part in the nausea and vomiting often linked to pregnancy.

  • Human placental lactogen. This hormone is also known as human chorionic somatomammotropin. It is made by the placenta. It gives nutrition to the fetus. It also stimulates milk glands in the breasts for breastfeeding.

  • Estrogen. This group of hormones helps develop the female sexual traits. It is normally formed in the ovaries. It is also made by the placenta during pregnancy to help maintain a healthy pregnancy.

  • Progesterone. This hormone is made by the ovaries and by the placenta during pregnancy. It stimulates the thickening of the uterine lining for implantation of a fertilized egg.

Featured in

© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Find a doctor that's right for you.

From routine check-ups to groundbreaking treatments and beyond, Crestner Health is here to help you live your healthiest life.

Search our doctors
Related Articles
Read article
OB/GYN
Warning Signs During Pregnancy

Call your healthcare provider right away if you have bleeding from the vagina, blurry vision, severe headaches, or other specific symptoms.

Read article
OB/GYN
Signs of Pregnancy/The Pregnancy Test

The signs of pregnancy vary from woman to woman, but the most obvious sign usually is a missed period.

Read article
OB/GYN
Symptoms and Diagnosis of Multiple Pregnancy

Every pregnant woman feels like she’s getting big. But if you’re pregnant with 2 or more babies, you’ll really be growing fast. Be prepared by learning the signs of a multiple birth.

Read article
OB/GYN
Dilation and Curettage (D and C)

Dilation and curettage or D&C is surgery to remove abnormal tissues in the uterus.