At 25 weeks pregnant (25+0 to 25+6 weeks from the first day of your last period) you are about 5 months and 23 days along, in the 6th month of pregnancy. Your baby is very active: a loud noise can make them jump and kick, and you may even feel hiccups. Swollen feet and ankles are common now and usually harmless, but your blood pressure needs checking; swelling of the face, or sudden, rapidly increasing swelling of the hands or legs, needs checking straight away.
Counted from your last period, 25 weeks pregnant is about 5 months and 23 days, so you are in the 6th month. This week covers days 175 to 181, with about 105 days to your due date.
According to the NHS, your baby is about 34.6 cm long from head to heel. This is an active time: a loud noise can make your baby jump and kick, which may surprise you but should not hurt. You might feel the occasional hiccup. Your baby now pees into the amniotic fluid; the NHS says that by this stage most of the fluid around your baby is urine, which cushions the baby and keeps the temperature stable.
ACOG lists these developments for weeks 25 to 28:
Swelling of the face, hands and feet. The NHS says this is usually caused by water retention and is harmless, but mention it to your midwife or doctor, because they will want to check your blood pressure to rule out a serious condition called pre-eclampsia. Pre-eclampsia can happen in the second half of pregnancy or after the birth. UpToDate advises that facial swelling should be checked for pre-eclampsia; get help straight away if your face swells. The Turkish Ministry of Health guideline adds that swollen feet can be caused by gravity in late pregnancy, whereas swelling of the hands and eyelids can be an early sign of pre-eclampsia.
If the swelling comes with a severe headache, vision problems or pain just below the ribs, call your doctor straight away (NHS).
Burping, heartburn and bloating. These are very common now because your growing baby takes up the space around your stomach. You may get a burning chest, bloating or nausea after eating. The NHS suggests:
Blood pressure thresholds. Under the Turkish guideline, 140/90 mmHg or higher is high blood pressure in pregnancy and needs referral to an obstetrician. NICE recommends that a woman with a first reading of 140/90 mmHg or higher after 20 weeks is seen in hospital within 24 hours, and on the same day if it is 160/110 mmHg or higher.
How much does the baby weigh? In the reference table of the World Health Organization's fetal growth study across 10 countries (2017), the median (50th percentile) estimated weight at 25 weeks is about 778 g; the 10th percentile is 673 g and the 90th percentile 894 g. These are reference values, not your own baby's measurement. The study notes differences between countries, maternal characteristics and the baby's sex, so these charts may need adjusting for local use. The growth trend matters more than a single measurement.
| Symptom | Usually | Seek care if |
|---|---|---|
| Swollen feet and ankles | Usually caused by water retention and harmless (NHS); gravity can cause it in late pregnancy (Turkish Ministry of Health). | Get help straight away for swelling of the face, sudden, rapidly increasing swelling of the hands or legs, a headache, vision problems or pain below the ribs; mention swollen hands or eyelids to your midwife or doctor so your blood pressure can be checked (NHS, Turkish Ministry of Health). |
| Burping and heartburn | Very common now; smaller meals, sitting up straight and less caffeine help. | Persistent pain just below the ribs, especially on the upper right, can be a sign of pre-eclampsia; get help straight away (NHS, UpToDate). |
| Small rhythmic jerks in the bump | This may be your baby's hiccups; the NHS says you may feel occasional hiccups around now. | Contact your maternity team without delay if your baby's movements slow down, stop or change their usual pattern (RCOG, NHS). |
Contact your midwife, doctor or maternity unit straight away if you have:
Most of these are danger signs or emergency referral criteria in the Turkish Ministry of Health Antenatal Care Management Guideline (2026); tightenings, cramps, backache and pelvic pressure are on UpToDate's list of preterm labour signs. Headache, vision problems, facial swelling, pain below the ribs and high blood pressure can be signs of pre-eclampsia (NHS, UpToDate). The NHS says to call if your baby's movements reduce, stop or change, without waiting until the next day, even at night. The RCOG says that between 24 and 28 weeks your baby's heartbeat, womb size, blood pressure and urine are then checked; do not rely on a home doppler.
Usually, yes; the NHS says it is mostly water retention. Still, tell your midwife or doctor so they can check your blood pressure. Get help straight away for swelling of the face, sudden, rapidly increasing swelling of the hands or legs, a severe headache, vision problems or pain just below the ribs.
The Turkish Ministry of Health guideline and the NHS list a severe or persistent headache, blurred or double vision, pain just below the ribs, and swelling of the face, hands and eyelids. UpToDate adds new or worsening high blood pressure. Because pre-eclampsia can develop while you feel well, blood pressure and urine checks at your appointments matter.
The NHS explains that your growing baby takes up the space where your stomach used to be, so indigestion and heartburn are very common now. Smaller meals, fewer rich or spicy foods, less caffeine and sitting up straight while eating can help.
Yes. The NHS says you may feel your baby's occasional hiccups around now, and your baby may startle at loud noises.
In the reference table of the World Health Organization fetal growth study (2017), the median estimated weight at 25 weeks is about 778 g, with the 10th percentile at 673 g and the 90th at 894 g. These are reference values; an ultrasound weight is itself an estimate with a margin of error, so the growth trend matters more than a single measurement.
Last updated: . All sources have been confirmed with their latest versions. This content is for educational purposes and is not a substitute for a doctor's examination.