Stages of pregnancy
17 Weeks Pregnancy: Physical Changes, Baby Development & Weekly Tips
At 17 weeks pregnant, your body experiences noticeable shifts—from posture changes to increased blood flow. You may feel hotter than usual, deal with sciatic nerve pain, or notice your nails and hair behaving differently. Your baby is also growing rapidly, forming bones, fingerprints, and even practicing little movements.
Physical Changes at 17 Weeks Pregnant
Your center of gravity continues to shift. Maintaining proper posture helps prevent backaches and avoids unnecessary muscular strain.
If you must lift something heavy, bend at the knees and use your thigh muscles.
Sciatic Nerve Pain
Some women experience troublesome sciatic pain because the growing uterus presses on the sciatic nerve. The discomfort may feel like sharp pain or pins and needles down the leg.
Tips that may help:
- Shift your weight often
- Sleep on your side with a pillow supporting your upper knee
- Avoid placing pillows behind your knees
- Avoid remaining in one position for too long
- Use a footstool when sitting to elevate your legs
Support Garments
Around week 17, some women opt for pregnancy girdles to support abdominal weight.
If You Have a Toddler
Encourage them to climb onto your lap rather than lifting them.
Using strollers, trolleys, or timing outings with your partner reduces strain on your back.
Pilates, yoga, water aerobics, and physiotherapy help maintain spinal alignment.
Your Physical Changes This Week
You may notice:
- Feeling hot due to increased blood supply
- Red palmar lines (a normal sign of pregnancy)
- More visible leg veins or aching legs
- Possible varicose veins
- Stronger hair with less shedding
- Nails becoming brittle, weak, or flaky
Supportive measures include:
- Wearing support hose
- Elevating your legs
- Using nail hardeners (in ventilated areas)
Your Emotional Changes This Week
You may feel:
- Clothing discomfort as your body shape shifts
- Frustration about what fits
- Fear or doubt about becoming a parent
- Anxiety during late-night thoughts
- Difficulty accepting help if you’re usually independent
These feelings are common across pregnancies.
Your Baby’s Development This Week
| Development Feature | Description |
| Size | About 13 cm from head to bottom |
| Weight | Doubled in the last two weeks |
| Appearance | Skin thin & translucent; visible blood vessels |
| Heart Rate | About double your own |
| Limbs | Legs now longer than arms; flexed knees & ankles |
| Bones | Calcium deposition has started |
| Sex | Visible on ultrasound; girls have ~3 million eggs |
| Chest | Tiny nipples appearing |
| Teeth | Baby teeth formed; fluoride supports enamel |
| Abilities | Yawning, stretching, facial grimaces |
| Sleep | Sleeps often but has active movement periods |
| Fingerprints | Now forming and unique |
Hints for Week 17
- Stand up gradually to avoid dizziness
- Schedule an eye check up if needed
- Maintain good hygiene to prevent rashes
- Use cotton underwear
- Lie quietly at night to feel early baby movements (common by week 18)
Yoga Videos (Always with Physician Approval)
- Heart of Love – Rock the Baby
- Standing Squat Twist
- Yoga Nidra
Created by Katie Brown, yoga teacher & infant massage specialist.
Due Date Indicators (Example Provided)
If you are in week 17:
- Possible due date: November 13–25, 2019
- Baby's star sign: Scorpio
