From mood swings to morning sickness—Know what pregnancy hormones do to your body.

Pregnancy is like a rollercoaster ride; one moment, you are extremely happy about something, and the next minute, you are crying over silly things or feeling the need to throw up. And this question must have popped up in your mind: Why do these changes happen? The answer is simple—hormonal fluctuations are at their peak throughout the pregnancy. From mood swings to physical discomfort, hormonal changes are at the heart of many of the symptoms pregnant women experience. In this article, we’ll explore how pregnancy hormones affect your body, what changes to expect at each stage of pregnancy, and how you can manage the effect of these hormonal shifts.

The Role of Hormones in Pregnancy

Hormones are chemical messengers that control important bodily functions like metabolism, growth, and reproduction. The body goes through a complicated hormonal change throughout pregnancy to support the growing baby and get the mother’s body ready for delivery. The following are some of the main hormones involved in pregnancy:

1. Human Chorionic Gonadotropin (hCG):

● The placenta produces hCG (pregnancy hormone) after the egg is fertilised and attached to the uterus. This hormone increases a lot in the first trimester of pregnancy, which is identified in pregnancy tests.

2. Progesterone:

● Progesterone levels rise greatly during pregnancy, helping to prepare the uterus for implantation and maintaining the pregnancy. It also helps relax the smooth muscles of the uterus so that there are no premature contractions.

3. Estrogen:

● Estrogen plays a key role in regulating the development of the baby and the growth of the uterus. It also stimulates the production of other hormones essential for pregnancy.

4. Oxytocin:

● Known as the “love hormone,” oxytocin increases during labour to help with contractions and mother-and-baby attachment.

5. Prolactin:

● Prolactin helps prepare the breasts for breastfeeding by stimulating milk production.

These hormones, along with others, work together to create the necessary conditions for a healthy pregnancy, but they also contribute to many of the changes a woman experiences during this time.

Hormonal Changes During the Trimesters of Pregnancy

Pregnancy is divided into three trimesters, each marked by different hormonal shifts and bodily changes. Here’s what you can expect during each stage:

First Trimester (Weeks 1-12):

● hCG Levels Peak:

● The first trimester is characterized by rising levels of hCG, which is responsible for many of the early pregnancy symptoms, such as nausea and vomiting (commonly known as morning sickness).

● As hCG levels peak, progesterone levels also begin to rise, which can cause fatigue, mood swings, and bloating.

● Fatigue and nausea:

● If progesterone levels are high, then the person will start feeling extremely tired and ultimately will sleep more. Nausea can also occur due to hormonal shifts, especially the elevated hCG and estrogen.

● Mood Swings:

● Due to the hormonal rollercoaster, mood swings are common in early pregnancy. Anxiety, excitement, and irritability are often reported by many expectant mothers.

Second Trimester (Weeks 13-26):

● Progesterone and estrogen Levels Continue to Rise:

● Many symptoms of the first trimester, be it nausea or vomiting, start to go away as progesterone and estrogen levels increase. But, the increase in hormones continues to have an effect, such as heartburn, constipation, and swollen breasts.

● Skin Changes:

● Estrogen improves blood flow to the skin, which may result in a “pregnancy glow” due to the increased oil production. On the flip side, some women may experience skin pigmentation changes, like the darkening of the nipples or the appearance of a linea nigra (a dark line running down the abdomen).

● Increased Blood Volume:

● Hormones like progesterone and estrogen control the body’s increased blood volume during pregnancy. Edema or swelling may result from this, especially in the legs and feet. 

Third Trimester (Weeks 27-40):

● Higher Levels of Relaxin:

● The production of relaxin during the third trimester helps in the relaxation of the pelvic ligaments in preparation for childbirth. This hormone can cause an increased sense of looseness or instability in the joints, which may result in pelvic discomfort.

● Oxytocin Increases:

● As the body prepares for labour, oxytocin levels rise, which stimulates the uterus to contract. Some women may experience Braxton Hicks contractions, which are irregular contractions that help prepare the body for actual labour.

● Breast Changes and Prolactin Surge:

● As pregnancy progresses, the breasts become fuller and more sensitive due to rising prolactin levels. This hormone plays a very important role in milk production post-birth.

Managing Hormonal Symptoms During Pregnancy

While hormonal changes are necessary for a healthy pregnancy, they can be challenging to manage. Here are some tips for dealing with common hormonal symptoms:

1. Morning Sickness:

● Eat small, frequent meals and keep ginger (in the form of tea or ginger candies) on hand to help reduce nausea. Avoiding strong smells and staying hydrated can also help.

2. Fatigue:

● Prioritize rest and listen to your body. Pregnancy tiredness can be reduced by taking a nap, drinking enough water, and eating a healthy, balanced diet.

3. Heartburn:

● Try to avoid spicy and fatty foods and eat smaller, more frequent meals to help alleviate heartburn symptoms. Antacids or natural remedies like almond milk may also offer relief.

4. Skin Changes:

● To combat pigmentation changes, apply a gentle sunscreen and moisturize regularly. If skin pigmentation changes become too noticeable, speak with your doctor.

5. Breast Tenderness:

● Opt for a comfortable, supportive bra to reduce discomfort. Warm compresses or gentle breast massages can also help alleviate soreness.