The change of pregnant woman week 21

The article was consulted professionally by Master, Dr. Ly Thi Thanh Nha – Department of Obstetrics and Gynecology – Share99 Da Nang International Health Hub.

The 21st week pregnant woman is prone to varicose veins developed by the fetus and an increase in levels of the hormone progesterone, which creates pressure on the veins in the mother's legs. In addition, the 21-week pregnant woman may experience some other symptoms such as flatulence, abdominal obstruction, back pain, bleeding gums.

1. What's so special about being 21 weeks pregnant?

The 21st week pregnant woman may notice that the pregnant belly grows enlarged, the uterus begins to expand to the navel. By this week of pregnancy, the weight of the maternity usually increases by about 4.5 – 6.3 kg.

The 21st week fetus is growing fat to keep warm. Fetal development in general during this period may slow down, but the bodies continue to be perfected. The baby's oil glands form a wax film, called a white wax layer, which covers the baby's skin during its stay in the mother's amniotic sac. Besides, permanent tooth buds also begin to form.

If the pregnant woman is interested in childbirth preparation courses, the 21st week pregnancy is the right time to start learning.

2. How has the 21st week's pregnant body changed?

The 21-week pregnant woman has passed halfway through her pregnancy. This period is usually quite comfortable because the womb is not too large and the discomforts in most parts of the body in the early stages of pregnancy have disappeared.

However, pregnant women may still experience some other problems during pregnancy at 21weeks , such as an increase in oil production in the body, which leads to acne development. In this case, the mother needs to rinse the acne area with mild soap or cleanser, regularly twice a day. In addition, pregnant women should use moisturizers or makeup that do not contain oils and stimulants for the skin. It is not recommended to take any acne medications or just prescription, because some medications can be dangerous for the fetus.

The 21st week pregnant woman is also prone to varicose veins. At this stage, the fetus begins to grow large, the pressure on the veins in the mother's legs is increasing. Furthermore, higher levels of the hormone progesterone are also the cause of weakened vein formations and worsening varicose veins. Pregnant women are more likely to have varicose veins if a family history of someone also has the disease. In addition, the disease tends to be exacerbated for people who become pregnant several times in a row or become pregnant when the age is already high.

To prevent or minimize the symptoms of intravenous insular failure, pregnant women should increase daily exercise, raise their legs when lying down, sleep on the left side and wear pregnant clothes that support maternity.

Some pregnant women may experience cobweb-shaped veins, which are a group of small blood vessels that appear near the surface of the skin, especially in the ankle, leg or facial area. They radiate cobwebs, similar to small rays of sunlight radiating from the sun or branches of trees that pierce the trunk or sometimes have no specific shape. Although cobweb-shaped veins may look a bit unsymoid, they generally do not have much effect on health and often disappear on their own after birth.


How has the 21st week's pregnant body changed?

3. Common symptoms in pregnant women week 21

  • Fetal movement

By the 21st week ofpregnancy, the mother can feel her baby twisting, turning and even pedaling into the womb. The movement of the fetus during this period is quite gentle and will increase sharply in the last weeks of pregnancy.

  • Cravings

Many pregnant women often feel cravings during pregnancy. In this case, it is advising to prepare and carry with you healthy snacks, such as nuts, raisins, cereal cakes,… to provide adequate energy for the mother and baby even while at work.

  • Constipation, flatulence

Increasing pressure from the fetus on the rectum can cause the pregnant woman to suffer from constipation, flatulence. To remedy this situation, pregnant women who are 21 weeks pregnant should drink plenty of water and supplement foods rich in fiber.

  • Back pain

The abdomen is enlarged, resulting in a change in body focus and pressure on the back. In addition, changes in pregnancy hormones cause ligaments and joints to become stretched and loose, causing the back area to hurt. Massage therapy can help to light up this symptom.

  • Bleeding gums

If you have gingivitis, pregnant women can see that the brush turns pink due to blood. To limit gingivitis during pregnancy, pregnant women should avoid eating sweets, marshmallows with teeth, especially when the pregnant woman cannot brush her teeth immediately after eating. Sweeteners increase the risk of bacteria in the mouth devastating tooth enamel and stimulate the gums, causing bleeding.

  • Fast-growing nails

Pregnant women at 21 weeks often notice that hair and nails grow faster than usual. This phenomenon is caused by the action from the pregnancy hormone, which leads to irritation of hair and nail growth for both the mother and the fetus in the abdomen.


Back pain is a common symptom during pregnancy week 21

4. Tips for pregnant women week 21

4.1. Choose fit exercises

Pregnant women at 21 weeks should maintain exercises of moderate intensity, suitable, such as swimming, yoga or walking. This is due to muscle tension, which makes pregnant women very susceptible to injuries during training.

4.2. High-legged millet

Pregnant women of this stage often have swelling of the feet and ankles. This is because during pregnancy, the volume of blood and fluid in the pregnant woman's body increases by about 50% compared to before pregnancy, causing some parts to swell, especially in the feet and ankles. Frequent changes in position and height of the legs when lying down will help overcome swelling of the masonry.

4.3. Moderate weight gain

Pregnancy causes the weight of the majority of pregnant women to increase rapidly. However, how much weight should be gained and how fast it is to gain weight is depending on the doctor's recommendation. During pregnancy visits, the doctor will set the mother a reasonable weight gain before the next visit. If the pregnancy has not yet exceeded this weight or gained weight too slowly compared to the doctor's recommendation, the pregnant woman needs to take measures to adjust the weight gain more appropriately.

4.4. Limit constipation

Both during pregnancy and in the first weeks after birth, physical activity is one of the best ways to stimulate intestinal muscle activity and fight constipation. With only 30 minutes of walking a day, drinking enough water and enhancing foods rich in fiber, constipation will improve markedly.

4.5. Consider before laser hair removal

Due to the effects of pregnancy hormones that stimulate hair growth, some areas of the pregnant woman's body may become more "dense" than usual. However, pregnant women should consider carefully before conducting laser hair removal, either by electricity or with bleach. These hair removal methods have not been studied on pregnant women. To ensure safety, pregnant women can completely use razors or hair removers to safely remove sensitive skin.

4.6. Iron Supplements


Iron supplements for the body during pregnancy week 21

Almost every pregnant woman encounters anemia at some stage of pregnancy. On the other hand, the need for iron supplementation for pregnant women increases due to the need to create blood for the fetus. Specifically, the maternity should add an amount of iron from 30 to 50 mg in the second half of pregnancy to ensure the iron needs of both the mother and the fetus (the additional iron dosage may be higher as recommended by the doctor). In addition, there are some foods rich in iron that women should use, such as spinach, beef, sardines, clams, oysters, shrimp, dried fruits, oats, artichokes and seaweed. Besides, pregnant women should not use a lot of caffeine-containing drinks because caffeine will reduce the effects of iron.

To ensure the best peace of mind for pregnancy health, pregnant women at 21 weeks can apply for the Maternity Care Program implemented by Share99 International Health Hub with the purpose of supporting with the pregnant mother until the day of "mother round square". The program includes the following service packs:

  • Maternity Care Program 2019 – 12 weeks
  • Maternity Care Program 2019 – 27 weeks

The medical staff at Share99 are all the leading professionals and prestige in the field of Obstetrics and Gynecology; modern facilities system to optimally support examination and screening techniques; civilized, luxurious medical space and professional services – all these advantages have helped Share99 become a hospital highly appreciated by professionals for maternity care, being the first choice of pregnant women.

Master. physician. Ly Thi Thanh Nha worked at Hue University Health Hub of Medicine and Pharmacy and Quang Tri General Health Hub before working at Share99 Danang International Health Hub. Dr. Nha has strengths and experience in the diagnosis of monitoring and treatment of pregnancy and pathology. Pregnancy screening. Perform cesarean section techniques. Laparoscopic surgery for ovarian cysts, extra-uterine pregnancy.

To register for examination and information about maternity care program at Share99 International Health Hub, you can register for examination and consultation online HERE.

Article reference source:, whattoexpect,


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About: Minh Quynh

b1ffdb54307529964874ff53a5c5de33?s=90&d=identicon&r=gI am the author of I had been working in Vinmec International General Hospital for over 10 years. I dedicate my passion on every post in this site.


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