Can my baby dream at 21 weeks?

Your baby has entered the REM (rapid eye movement) phase of sleep, which is associated with dreaming in adults. While we cannot know for certain if babies dream in the womb, the presence of REM sleep suggests brain activity consistent with dream-like states.

How can I prevent stretch marks?

Stretch marks are largely genetic and cannot be completely prevented, but keeping your skin moisturized and maintaining a steady, healthy weight gain may help minimize them. Creams and oils can help with itching even if they do not prevent marks.

Second Trimester 21 weeks pregnant

Pregnancy Week 21 - Baby Swallows Amniotic Fluid & Bone Marrow Forms

At 21 weeks, your baby is about the length of a carrot. Bone marrow is starting to produce blood cells, a major milestone in development. Your baby is swallowing amniotic fluid, which helps develop the digestive system. Eyebrows and eyelids are now fully formed.

Carrot

Baby Size

26.7 cm (head to heel)

Length

360 grams

Weight

Week 21

of 42

Baby Development This Week

Your baby's bone marrow is now producing blood cells, taking over this job from the liver and spleen. This is a major developmental milestone. Your baby is swallowing amniotic fluid regularly, which helps the digestive system mature. The eyebrows and eyelids are fully formed, and your baby may even have some head hair. The rapid eye movement (REM) phase of sleep has begun, which is essential for healthy brain development and may indicate dreaming.

Changes in Your Body

Your belly is growing steadily, and you may notice stretch marks appearing. Some women develop varicose veins in their legs due to increased blood volume and pressure. You might experience Braxton Hicks contractions more frequently. Your growing belly may cause your center of gravity to shift, leading to occasional clumsiness. Some women notice changes in their vision due to fluid retention in the eyes. You may be gaining about a pound per week now.

Common Symptoms at Week 21

Stretch marksVaricose veinsBraxton HicksClumsinessVision changesWeight gain

Tips for Week 21

Elevate your legs when sitting to reduce swelling and varicose vein discomfort.
Wear compression socks if you are on your feet a lot.
Stay hydrated and eat fiber-rich foods to prevent constipation.
Start planning the nursery and gathering baby essentials.

When to Call Your Doctor

Seek immediate care for signs of preeclampsia, painful contractions, heavy bleeding, severe swelling, or significantly decreased fetal movement.

Frequently Asked Questions — Week 21

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