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Week 25 sits within the second trimester. The fetus is adding tissue and practising reflexes, with increasingly strong activity. This guide explains what may be happening now, what can vary, and which concerns deserve prompt professional advice.
What is happening at pregnancy week 25
Posture and pelvic loading change as the abdomen grows. Gestational age is counted from the first day of the last menstrual period, so early numbered weeks include time before conception. Dating may later be adjusted using clinical information and ultrasound.
Baby development
Startle, grasp and swallowing responses strengthen, while the nervous system continues organising.
Approximate size and growth
The fetus is approximately swede sized, around 34 centimetres head to heel, with broad normal variation.
Changes you may notice
Hiccups may feel rhythmic, and pelvic pressure or lower-back discomfort can increase. Some people notice several changes at once, while others feel little different. The presence or absence of a symptom cannot on its own confirm how a pregnancy is progressing.
Common symptoms
- Rhythmic fetal hiccups
- Pelvic or back discomfort
- Restless sleep
These experiences are possibilities, not a checklist. Symptoms can be mild, strong, intermittent or absent at week 25, and a different pattern does not automatically mean that anything is wrong.
Emotional wellbeing
Frequent advice from others can become tiring. Prioritise your care team and values over anecdote. A short daily check-in can help: notice what feels manageable, identify one source of support, and write down a concern instead of carrying it alone.
If worry is persistent, interferes with sleep or daily life, or makes it hard to cope, tell your midwife, doctor or another trusted healthcare professional. Emotional health deserves the same attention as physical health.
Nutrition and hydration
Plan regular food and fluid access during busy days; long gaps can worsen nausea, reflux or low energy. Sip fluids regularly and use urine colour and thirst as everyday prompts, while following any fluid advice given for a medical condition.
Aim for regular meals built around vegetables and fruit, wholegrain or other fibre-rich foods, protein foods and suitable dairy or alternatives. Follow local advice on prenatal supplements and foods to avoid; individual needs differ, especially with allergies, diabetes, anaemia or severe nausea.
Safe movement and daily comfort
Use stable footwear and avoid movements that increase pelvic pain; seek assessment rather than pushing through. Choose an intensity at which you can still speak comfortably, include rest, and adapt for heat, balance changes or pelvic discomfort.
For an uncomplicated pregnancy, comfortable everyday activity is often encouraged. Stop and seek advice if movement causes pain, bleeding, dizziness, chest symptoms, fluid loss or contractions. A clinician can tailor advice for complications or a previously inactive routine.
Appointments and screening
Routine checks track blood pressure, urine, symptoms and growth, with frequency increasing later.
Exact schedules and tests vary by country, pregnancy history and care plan. Keep a note of new symptoms, medicines and questions so your appointment can focus on what matters to you.
Warning signs and when to seek care
Trust a strong sense that something is wrong: maternity services would rather assess a concern than have you delay because it does not match a list.
- Contact your maternity service promptly for vaginal bleeding, suspected fluid loss, severe or persistent abdominal pain, a severe headache, vision changes, sudden swelling, fever, breathing difficulty, chest pain or feeling acutely unwell.
- Once you have established a usual pattern of movement, seek maternity advice promptly if your baby is moving less than usual or the pattern changes. Do not wait for the next day.
- Use emergency services for collapse, severe breathing difficulty, heavy bleeding, a seizure or another immediately life-threatening concern.
Practical preparation for this week
Begin comparing practical birth-location information if choices are available.
- Ask about birth-place options
- Address pelvic pain early
- Keep a current medicine list
Frequently asked questions
Are fetal hiccups normal?
Rhythmic small movements can be hiccups and are common. Contact your maternity service for any broader movement concern.
Should pain be accepted as part of pregnancy?
No. Some discomfort is common, but pain that limits function, worsens or comes with other symptoms deserves assessment.
Should I compare my pregnancy with someone else at week 25?
No two pregnancies follow an identical pattern. Dating can vary, symptoms are influenced by many factors, and growth is assessed over time rather than from a single comparison. Bring personal concerns to your maternity team.
Week 25 in brief
Week 25 brings stronger reflexes and activity. Protect pelvic comfort and begin practical, flexible planning for birth care.
References
The following authoritative resources support editorial and professional review. Guidance should be checked for currency and local applicability before publication.
OUR REVIEW PROMISE
Evidence-based, clearly reviewed.
Healthier Baby Today articles are reviewed for accuracy and updated as guidance changes.
Last updated: July 17, 2026
