30 Weeks Pregnant: Baby Development, Symptoms And Tips

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How Many Months Pregnant Are You At 30 Weeks?

At 30 weeks pregnant, you are in the seventh month and third trimester. You are around ten weeks away from your due date.

How Big Is Your Baby At 30 Weeks?

This week, your baby is as big as a large cabbage (1). The baby measures 15.71in (39.9cm) in length and 2.91lb (1.319kg) in weight (2). Around 1.5l of amniotic fluid surrounds the baby, eventually reducing as the baby grows and takes more space inside the uterus (3).

Baby Development At 30 Weeks

Here is how the baby is developing this week:

Body organsDevelopment
Skin (4)Looks smoother and starts accumulating fat under the skin. It is the baby’s white fat
LanugoThe fine hair covering the body starts shedding. Some babies are born with some hair on their shoulder, ear, and back
Brain (5)The brain tissues are developing and forming wrinkles to accommodate more brain cells.
Bone marrowIs producing more red blood cells.
Nervous system (6)Developed and starts controlling some body functions.
Lungs (7)Are still developing, but are capable of breathing.
EyelidsBegin to open and close.
HeadMight be full of hair.
FingersDeveloped and baby can suck thumb.
Ears (8)Developed and the baby can react to loud sounds.
Tongue (9)Taste buds are developed.

Fetal movements and position: The baby may be in a head-up or head-down position, as there is still some space left for the baby to move. As the due date approaches, the baby will attain the optimum position. After 36 weeks, the baby’s presentation remains static. However, the space inside the womb can be comparatively crunched in a twin pregnancy. The kicks get stronger by this week and can be felt frequently.

Symptoms You May Experience In The 30th Week Of Pregnancy

As the pregnancy proceeds, new symptoms may develop, even as the earlier ones remain. Symptoms that you may experience this week include:

  • Weight gain: An average weight gain of one to two pounds per week during the third trimester of pregnancy is considered safe, as recommended by the American Pregnancy Association (APA) (10). However, the recommended weight gain rates for women with BMI less than 18.5 and greater than 24.9 usually range between 0.5 and one pounds.
BMI18.5 – 24.925 – 29.930 and Above
Recommended weight gain (lb)18- 2716- 2410-187-14
  • Heartburn: The gastric juices forced upward into the esophagus by the growing uterus may cause you to experience heartburn.
  • Trouble sleeping: Owing to body aches, frequent urination, leg cramps, and anxiety, you can sometimes have difficulty sleeping well.
  • Swelling: Swollen feet and ankles during this time may occur from water retention in the body.
  • Fatigue: It is common as the body works extra and needs additional nourishment.
  • Difficulty in breathing: The pressure exerted by the growing uterus on the diaphragm can make it hard to breathe at times.
  • Backache: The extra weight of the baby puts pressure on the lower back, causing pain in that region.
  • Frequent urination: The bladder is compressed by the growing uterus, which increases the urgency to urinate more often.
  • General discomfort: You may be more uncomfortable due to the increased weight from the growing belly, which may restrict your movements and cause symptoms such as back pain, frequent urination, and shortness of breath.
  • Feet changes: Fluid retention and reduced blood circulation can cause swelling in the feet. In addition, increased levels of hormones cause loosening of the joints, which in turn may cause the feet to grow bigger (11) (12).
  • Varicose veins: Swelling of the veins in the legs due to increased blood flow to the lower part of the body leads to varicose veins.
  • Mood swings: Mood swings during pregnancy are common, and the changes in the hormonal levels may cause you to experience them in the third trimester (13).
  • Bloating and gas: As the digestion process slows down, the food remains longer in the digestive tract, creating gas and making you feel bloated.
  • Constipation: The digestive tract relaxes due to the progesterone hormone, which slows digestion and causes constipation.
  • Braxton Hicks contractions: These are irregular and spontaneous contractions that help your body prepare for labor.
  • Stretch marks: They become prominent in the later part of the pregnancy, such as the sixth or seventh month, due to the stretching of the belly from the growing uterus (14).

These symptoms result in specific physiological and psychological changes as well.

Changes In The Body At 30 Weeks

Bodily changes women may experience during the 30th week of pregnancy are as follows.

Physical changes

  • Enlarged belly, with the navel protruding out. The belly will look bigger than usual in women carrying twins or multiples.
  • Swollen breasts, as the body is preparing for milk production.
  • Darker areola and nipples
  • Stretch marks
  • Prominent linea nigra (the dark line extended on the belly)
  • Change in shape of feet due to the loosening of joints caused by pregnancy hormones.

Emotional changes

  • Mood swings
  • Anxiety
  • Stress

Considering that you are closer to the due date, there are a few risks you should be wary of this week.

30 Weeks Pregnant With Twins

If you are 30 weeks pregnant with twins, you may expect the following besides the other common symptoms (15):

  • Weight gain of 1.5lb per week, which may differ from person to person
  • Frequent tiredness from otherwise easy activities
  • More Ob/Gyn visits than a single pregnancy to check the fetal health
  • Preterm labor since a twin pregnancy may increase the chances of premature birth

30 Weeks Ultrasound

At the 30th week ultrasound, you may see the following developments and visuals of your baby (16) (17):

  • Spine and ribs of the baby
  • Umbilical cord with its blood vessels
  • Baby’s skin appears smooth and less wrinkly

When To Call The Doctor

If you notice any of the following symptoms, ensure to call the doctor right away (18):

  • Pelvic pain with or without cramping
  • Fever (100.4 degrees or higher)
  • A headache that doesn’t subside even after taking Tylenol (acetaminophen)
  • Persistent nosebleeds
  • Pain or a burning sensation while urinating
  • Persistent cramps
  • Dizziness
  • Sudden weight gain (two pounds in one week).
  • Sudden bleeding or spotting
  • Sudden stoppage of fetal movement

If the symptoms are normal, go for a regular OB/GYN check-up.

Your Ob/Gyn Visit

During the visit, the doctor may:

  • Measure the symphysis fundal height
  • Check blood pressure and weight
  • Advise a urine test to check for sugar or protein level
  • Suggest an ultrasound to track the baby’s development, especially in the case of multiple pregnancies or high-risk pregnancy.

Other tests that are done during this week:

  • For pregnant women from areas where Syphilis (Sexually Transmitted Infection) is prevalent, the doctor may advise a syphilis diagnostic test between 28 and 32 weeks of pregnancy and during delivery.
  • A biophysical profile is done in the case of twin or multiple pregnancies. It is a combination of an ultrasound and a non-stress test to gauge the baby’s growth.
  • 75gm oral glucose tolerance test if not done at 28 weeks.
  • Along with the medications or supplements suggested by the doctor, you should also follow a healthy lifestyle for a healthy pregnancy.

Tips For Mom-to-be

  • Avoid standing for long hours.
  • Keep track of the baby’s kicks. You’ll feel the kicks better when lying down in the left lateral position.
  • Avoid lying on your back.
  • Stay hydrated.
  • Take enough rest.
  • Stay relaxed and keep all the fears and stress at bay.
  • As per the NHS guidelines, a pregnant woman should get an extra 200 calories per day starting from the third trimester. Take folic acid, vitamin C, iron, and calcium supplements. Include carrots, nuts (almonds, cashews, pistachios), and frozen yogurt in your diet.
  • Adopt a healthy lifestyle and have home-cooked food.
  • Eat smaller meals at regular intervals.
  • Include fruits and vegetables, breakfast cereals, whole grain bread, and bran in the diet.
  • Avoid lifting heavy objects.
  • Avoid OTC medications unless prescribed by your doctor.
  • In case of heartburn, avoid eating deep-fried, spicy foods.
  • Enroll in childbirth classes to learn about labor pain-relief techniques and ideal labor positions.
  • Practice Kegel exercises to strengthen the pelvic floor muscles and engage in mild activities like walking. Pregnancy yoga, low-impact pilates, and gentle stretches are helpful for the pelvic muscles.
  • Wear loose and comfortable clothes.
  • Switch to comfortable footwear.
  • Go to the hospital to familiarize yourself with the distance and time you will need to reach and prepare accordingly.
  • Consult your doctor or midwife about the delivery process, requirements and preparations.

Most importantly, seek your partner’s support when needed.

Tips For Dad-to-be

  • Here is how the dad-to-be can help.
  • Create a lively ambiance at home.
  • Help you with the household chores.
  • Accompany you to the doctor and track the appointments.
  • Partner with you during the workout sessions.
  • Plan an outing for a refreshing change.
  • Start shopping for the essentials you need to have during and after delivery.
  • Search for baby names.

Frequently Asked Questions

1. What does a super active baby in the womb mean?

Generally, it is believed that an active baby is a healthy baby. These movements promote healthy bone and joint development. In such a case, you need not worry and stay relaxed and healthy.

2. Can I deliver in 30 weeks?

The survival rate of fetuses born between 28 and 32 weeks is around 80 to 90% (19). Some babies may be transferred to NICU for a day or two just for observation.

3. What does a 30-week baby do in the womb?

At 30 weeks, your baby has developed its reflexes and can be seen sucking its thumbs (17). During this time, they mostly keep their eyes closed and turn less. However, at 30 weeks, your baby will kick and poke more (20).

4. What are the signs of preterm labor at 30 weeks?

A few signs of preterm labor to look out for at 30 weeks of pregnancy are (21):

  • Period-like cramps
  • Pelvic pressure
  • Vaginal discharge with or without blood
  • Painless or painful contractions
  • Low back pain

The little kicks get stronger as you approach the 30th-week pregnancy. The baby weighs about 2.8lb, can suck thumb, and may react to loud sounds. Much of the space inside your belly is occupied, which may cause digestion problems, frequent urination, body pains, and difficulty breathing. An enlarged belly, swollen breasts, and stretch marks are some changes you experience at 30 weeks pregnant. Stay relaxed, avoid sleeping on your back, and follow prenatal check-ups and medication instructions. Seek medical help if you experience abnormal pain, vaginal bleeding, or contractions.

Key Pointers

  • At 30 weeks pregnant, your baby is the size of a large cabbage and is still developing but aware of sounds.
  • You may experience heartburn, increased weight gain, shortness of breath, mood swings, and Braxton hicks contraction during this time.
  • Your Ob/Gyn visits may involve ultrasounds, blood pressure, and sugar check. The frequency of ultrasounds may increase in case of twin pregnancies.
  • The mom and dad-to-be need to be involved and carry out the required responsibilities, such as keeping up with the prenatal tests and preparing for the baby’s arrival.
  • Look for signs of concern such as fever, dizziness, continuous cramps, and bleeding, and report to the doctor.


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
  1. 30 weeks pregnant – All you need to know.
  2. Fetal Development.
  3. 30 weeks pregnant: Mama needs a new pair of shoes.
  4. 30 weeks pregnant.
  5. The third trimester.
  6. Fetal development.
  7. Stages of fetal development – third trimester.
  8. When can my unborn baby hear me? I’d love to be able to read and sing to them.
  9. Your growing baby.
  10. Pregnancy weight gain.
  11. Changes in your body during pregnancy: Third trimester.
  12. 30 weeks pregnant.
  13. Your third trimester.
  14. Pregnancy stretch marks.
  15. For Twins or More: What to Consider in Your Third Trimester.
  16. Ultrasound pregnancy.
  17. You and your baby at 30 weeks pregnant.
  18. What are some warning signs of potential pregnancy complications?
  19. When is it safe to deliver your baby.
  20. Your baby’s movement during pregnancy.
  21. Amphan Chalermchockcharoenkit (2002); Preterm Labor; Thai Journal of Obstetrics and Gynecology.
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Aneesha Amonz

Aneesha holds a Bachelor's degree in Biotechnology from USTM, Meghalaya and Master’s degree in Applied Microbiology from VIT, Vellore. She has worked on different research projects in the field of Food Sciences. In addition, she has an internship experience in Oil India Limited as an R&D project trainee. As a writer at MomJunction, Aneesha ensures her content is engaging and... more

Subhashis Samajder

( MS, DNB)
Dr. Subhashis Samajder is a consultant Gynecologist-Obstetrician currently practising at Narayana Multispeciality Hospital, Howrah. His area of expertise includes abortion, colposcopy surgery, hysterectomy, hysteroscopy, infertility treatment, and menopausal problems. Dr. Samajder believes in sending his patients back home healthy and satisfied with the treatment. He also takes up women’s health awareness through his YT videos.