Pregnancy is a time of incredible change for a woman's body. From the moment of conception, your body begins to undergo a series of complex and amazing transformations to prepare for the arrival of your baby. Here are seven of the most fascinating things that happen to your body during pregnancy:
**1. Your Uterus Grows**
One of the most obvious changes that occur during pregnancy is the growth of your uterus. The uterus, which is normally about the size of a small fist, begins to expand to accommodate the growing baby. By the end of pregnancy, your uterus will have grown to about 500 times its original size.
**2. Your Blood Volume Increases**
Your blood volume also increases during pregnancy, by about 40-50%. This is necessary to provide the extra nutrients and oxygen that your baby needs. The increased blood volume can also lead to some common pregnancy symptoms, such as varicose veins and hemorrhoids.
**3. Your Heart Rate and Breathing Increase**
Your heart rate and breathing also increase during pregnancy. This is because your body is working harder to pump blood and oxygen to your baby. The increased heart rate can sometimes lead to palpitations, which are harmless but can be uncomfortable.
**4. Your Metabolism Increases**
Your metabolism also increases during pregnancy, by about 20-25%. This is because your body is using more energy to support the growth of your baby. The increased metabolism can lead to increased hunger and weight gain.
**5. Your Hormones Change**
Pregnancy is a time of hormonal changes. The levels of estrogen, progesterone, and human chorionic gonadotropin (hCG) all increase during pregnancy. These hormones are responsible for a variety of changes in your body, including breast development, nausea, and mood swings.
**6. Your Skin Changes**
Your skin also changes during pregnancy. The increased levels of estrogen can lead to increased pigmentation, which can cause darkening of the skin around your nipples, armpits, and groin. You may also develop stretch marks, which are caused by the rapid stretching of your skin.
**7. Your Immune System Changes**
Your immune system also changes during pregnancy. The increased levels of progesterone can suppress your immune system, which makes you more susceptible to infections. However, your immune system also produces antibodies that protect your baby from infection.