Pregnancy Week 17
Your baby is growing stronger this week. The skeleton continues to develop, the body is becoming more proportionate, and a thin layer of fat is beginning to develop beneath the skin. Your baby is also becoming increasingly active.
Your Baby This Week
Skeleton & Fat Development
At week 17, your baby’s skeleton continues to strengthen and develop. The bones are becoming more structured, while the joints allow your baby to move the arms and legs more freely.
The body is also beginning to develop a small amount of fat beneath the skin, although the skin remains thin and delicate.
More Coordinated Movement
Your baby’s muscles and nervous system are becoming more coordinated. Your baby can move the arms, legs, hands, and feet, and these movements are becoming increasingly purposeful.
Developing Hearing
The structures of the inner ear continue developing. Your baby is becoming increasingly capable of detecting sounds and vibrations as the auditory system matures.

Growing Stronger
Your baby is about the size of a turnip. The skeleton is developing while the muscles and nervous system allow increasingly coordinated movements.
Your Body This Week
Your body continues changing as your pregnancy progresses through the second trimester.

Growing Belly
Your uterus continues to expand, and your pregnancy bump may become increasingly noticeable.

Feeling Baby Movements
You may begin noticing your baby's movements around this stage, although many people do not feel consistent movement yet.

Increased Appetite
Your appetite may continue increasing as nausea becomes less noticeable. Try to satisfy hunger with nutritious, balanced meals and snacks.

Round Ligament Discomfort
As the uterus grows, the ligaments supporting it stretch. This can sometimes cause brief pulling or aching sensations in the lower abdomen or sides.
Tips for week 17
- Continue taking your prenatal vitamin every day.
- Include calcium-rich foods to support your baby's developing bones.
- Eat enough protein throughout the day.
- Include iron-rich foods regularly.
- Drink plenty of water.
- Continue pregnancy-safe physical activity if approved by your healthcare professional.
- Practice good posture as your belly grows.
- Wear comfortable and supportive footwear.
- Get enough rest and sleep.
- Avoid alcohol, smoking, and recreational drugs.
- Limit caffeine to 200 mg or less per day during pregnancy.
- Keep your prenatal appointments and recommended screenings.
Nutrition This Week
Your baby’s bones, muscles, and growing body require a variety of nutrients during this stage.

Calcium Sources

Iron Rich Foods

Protein Rich Foods

Folate Rich Foods

Healthy Fats

Fruits & Vegetables

Whole Grains

Stay Hydrated
Nutrition Tip
Calcium, vitamin D, and protein are especially important nutrients to include regularly as your baby’s bones continue to develop. Follow your healthcare professional’s advice regarding prenatal supplements.
Frequently Asked Questions
How big is my baby at Week 17?
Your baby is approximately the size of a turnip. Exact measurements vary depending on the timing of development.
What is developing during Week 17?
Your baby’s skeleton continues developing, the muscles are becoming stronger, and a small amount of fat begins developing beneath the skin.
Can my baby move during Week 17?
Yes. Your baby is becoming increasingly active and can move the arms, legs, hands, and feet.
Can I feel my baby move at Week 17?
Some people may begin feeling their baby’s movements around this time, but it is also normal not to feel movement yet. The timing varies from person to person.
Can my baby hear sounds at Week 17?
The structures of the ears continue developing, and your baby’s ability to detect sounds will continue improving as the pregnancy progresses.
Why am I experiencing pulling sensations in my abdomen?
As your uterus grows, the supporting ligaments stretch. This can cause occasional mild pulling or aching sensations. Severe or persistent pain should be discussed with your healthcare professional.
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