pregnancy week 17
17 weeks pregnant.
A waxy coating called vernix starts to protect the skin. Sweat glands form, and the umbilical cord grows thicker and stronger.
Updated 29 July 2026 · Sources: NHS and ACOG
Your baby this week
Skin is still see-through but now covered with a creamy waxy coat (vernix caseosa) that protects it from amniotic fluid.
- Vernix coats the skin
- Sweat glands develop
- Umbilical cord thickens
- Hearing sharpens
What may be changing in your body
Your bump is more visible. You may notice back discomfort starting up — posture matters as the belly grows.
Stronger, more regular flutters
If quickening has begun, movements gradually become more distinct and frequent. No fixed pattern is expected yet — that comes in the third trimester.
Increased appetite
The baby is entering a rapid growth phase and your hunger often follows. Aim the extra intake at protein, calcium and iron rather than grazing on sugar.
Dry, itchy skin over the bump
Skin stretching over the growing belly commonly itches. Moisturiser soothes it; intense itching, especially of the palms and soles, should be reported to your midwife as it can signal a liver condition (ICP).
Sciatica or hip twinges
The loosening of pelvic joints and the shifting bump can irritate the sciatic nerve, sending twinges down the buttock and leg. Position changes, warmth and gentle stretching usually ease it.
Vivid dreams continuing
Strange, cinematic dreams remain common through mid-pregnancy. They are a normal quirk of hormones and lighter sleep.
Feeling warmer and sweating more
Your metabolism and blood volume keep climbing, so you run hot. Layers, breathable fabrics and plenty of water are the practical answer.
Your week 17 checklist
- Start researching childcare options and costs if you plan to return to work — waiting lists in some areas are long
- Do a car seat and car check: which seat fits your car, and does anything need upgrading
- Book a babymoon or any longer trip for the 18-to-28-week window, the most comfortable travel stretch
- Begin sorting the room or corner that will become the baby's space
A useful partner move this week
This is the ideal fortnight to plan a babymoon — she is likely feeling the best she will all pregnancy, and travel gets harder from the third trimester. Take the lead on logistics so it is a rest for her, not another project. Closer to home, start clearing and planning the baby's space together; doing it early beats painting a nursery at 36 weeks.
What comes next
The anatomy scan in 1–5 weeks will check on heart, brain, kidneys, and limbs in detail. You can also learn the sex if curious.
Common questions
Is it safe to travel and fly during the second trimester?
Yes — weeks 14 to 28 are widely considered the best window for travel, with nausea gone and the bump still manageable. On flights, walk regularly and stay hydrated to reduce clot risk, and carry your maternity notes. Check your airline's policy and travel insurance terms, and clear long-haul plans with your midwife if you have any complications.
Why does my belly itch and should I worry?
Mild itching over the bump is usually just skin stretching and responds to regular moisturising. The pattern that needs attention is intense itching — classically of the palms and soles, often worse at night — without much rash, which can indicate intrahepatic cholestasis of pregnancy (ICP), a liver condition needing monitoring. If your itching fits that description, call your midwife or doctor rather than waiting for your next appointment.
How much weight should I be gaining each week now?
Through the second and third trimesters, typical gain is roughly 0.2 to 0.5 kg per week, with a healthy total of around 11.5 to 16 kg for someone who started at a normal BMI — less if starting heavier, more if starting lighter or carrying twins. Steady is more important than exact. Your midwife will flag it if your pattern needs attention, so there is no need to weigh yourself obsessively.
How many months is 17 weeks pregnant?
Pregnancy months do not divide evenly into weeks, so clinicians date pregnancy in weeks. At 17 weeks, you are in trimester two.