Week 25 Pregnancy

Second Trimester

Last reviewed: July 2026

25 weeks pregnant at a glance

You are in the second trimester.
Your baby is roughly the size of a swede.
Routine care.
Every pregnancy is different, so don't worry if your experience varies slightly.

You are 25 weeks pregnant and in your second trimester. Your baby is about the size of a swede. This week's key development: Building Reserves. NHS note: Routine care.

This page is for general pregnancy planning and date guidance only. It is not medical advice, diagnosis, or treatment. Pregnancy dates are estimates and can change after a scan or advice from your midwife, GP, or maternity team. Always speak to a qualified healthcare professional if you have symptoms, concerns, or questions about your pregnancy.

Week 24

Week 26

Baby's Development

Your baby is about the size of a swede.

Building Reserves — Your baby is gaining weight more rapidly now, and fat stores are developing steadily. Their hands are fully formed and sensitive to touch. You may notice your belly moving as your baby responds to sounds, light, or even what you've eaten.

Swede

Approx. 34.6cm

Your Symptoms

Haemorrhoids
Heartburn
Restless legs

Every pregnancy is different. You may experience all, some, or none of these symptoms — and that's completely normal. If anything concerns you, speak to your midwife.

NHS Appointments

Routine care. You may be offered a glucose tolerance test (GTT) if you're at risk of gestational diabetes.

Practical Advice for Week 25

Nutrition

Continue vitamin D daily.
Eat smaller, more frequent meals to manage heartburn.
Include plenty of fibre — prunes and whole grains help with constipation.
Calcium-rich foods remain important as your baby gains weight rapidly.

Exercise

Keep up with pelvic floor exercises — they're vital for labour and recovery.
Walking, swimming, and gentle cycling are all still safe.
If haemorrhoids are bothering you, gentle exercise and fibre help.
Avoid high-impact activities — your joints are loosening due to relaxin hormone.

Wellbeing

Restless legs at night are common — try stretching, massage, and warm baths.
Heartburn can be managed with antacids (speak to your pharmacist for pregnancy-safe options).
Haemorrhoids are unpleasant but very common — ice packs and witch hazel pads can help.
Prioritise rest — your body is working incredibly hard.

Preparation

You may be offered a glucose tolerance test (GTT) if you have risk factors.
Start packing your hospital bag — a little at a time.
Research infant feeding — breastfeeding support, formula options, or combination feeding.
Check your maternity leave dates with your employer.

Tip of the Week

Eat smaller meals more often to help manage heartburn and indigestion.

Frequently Asked Questions for Week 25

How many months is 25 weeks pregnant?

At 25 weeks pregnant, you are roughly 5 months pregnant. Remember that pregnancy is typically measured in weeks rather than months for clinical accuracy.

What size is the baby at 25 weeks?

At 25 weeks, your baby is roughly the size of a swede (about 34.6cm). Your baby is gaining weight more rapidly now, and fat stores are developing steadily. Their hands are fully formed and sensitive to touch. You may notice your belly moving as your baby responds to sounds, light, or even what you've eaten.

What are the common symptoms at 25 weeks pregnant?

Common symptoms at this stage include haemorrhoids, heartburn, restless legs. Remember that every pregnancy is unique, and it's normal to experience different symptoms.

Is 25 weeks in the second trimester?

Yes, 25 weeks falls within the second trimester.

Are there any NHS appointments at 25 weeks?

Routine care. You may be offered a glucose tolerance test (GTT) if you're at risk of gestational diabetes.