Five pregnancy warning signs to track before your next appointment

A midwife may hear many different descriptions of pregnancy symptoms, from ordinary changes to signs needing review. Knowing what reflects normal variation and what needs a clinician's attention is one of the harder parts of those nine months. Many parents learn through experience which sensations to mention and which to put down to pregnancy.

Some important signals are subtle and develop gradually. They may appear quietly over days or weeks, making them easy to overlook or explain away without a record to compare today with three weeks ago.

Here are five symptom categories that midwives often need described in detail: when they happened, how often, and whether they are improving or worsening. None replaces clinical assessment. Several should lead to a call to your midwife, not simply a note in your log. We will identify these clearly.

1. Changes in foetal movement

Foetal movement is among the most sensitive signs of foetal wellbeing. NHS and RCOG (Royal College of Obstetricians and Gynaecologists) guidance is clear: there is no fixed "normal" number of movements each day. The important reference is your baby's pattern, established over the weeks you have monitored consistently.

This makes daily movement logging more useful than one afternoon's "kick count". A baby usually active between 9am and noon but quiet in the evening may be following their normal pattern. A reduction from that established pattern is worth noting and may warrant a call, whatever population averages suggest.

If your baby's movements reduce or feel different from their usual pattern, contact your midwife or maternity unit that day. Do not wait for your next appointment. Movement concerns need prompt assessment, not just logging for discussion at a scheduled visit.

Daily records provide useful context for that conversation. Rather than saying "I think the baby has been quieter," you can say, "The baby has been less active than usual for the past three days, and here is the comparison." That detail helps your midwife assess the situation more accurately.

2. Blood pressure patterns

Pregnancy blood pressure shows why trends can matter more than one reading. A clinic reading, after travelling, waiting and feeling mildly anxious, may not show your true baseline. A week of morning readings at home, taken in consistent conditions, can give a clearer picture.

Your midwife will have discussed blood pressure ranges with you. In most pregnancies, readings consistently above 140/90 are considered elevated and need clinical attention. Any meaningful rise also merits discussion, even when individual readings remain below formal thresholds. Bring a log of readings that have climbed steadily over several weeks to your midwife.

If you use a home blood pressure monitor and readings are consistently above 140/90, or you develop a sudden headache, visual disturbances (spots or flashing lights), severe swelling of the face, hands or feet, or pain just below the ribs, contact your midwife or maternity unit immediately. Call 999 if symptoms are severe. These may indicate pre-eclampsia, which needs prompt assessment.

3. Persistent headaches

Headaches are common in pregnancy, especially during the first trimester, and often result from hormonal changes and increased blood volume in early pregnancy. Persistent or severe headaches, especially in the second and third trimester, should nevertheless be logged carefully.

Your midwife will want to know whether the headache comes with visual changes, upper abdominal pain or significant swelling. If any occur alongside a headache, do not record it and wait. Contact your midwife or maternity unit straight away.

For headaches, daily records show their frequency and character. A midwife will assess six headaches in ten days, two severe enough to affect daily function, differently from one headache mentioned briefly at an appointment. Frequency matters.

4. Swelling, particularly sudden changes

Some ankle and foot swelling is very common in pregnancy, particularly in the third trimester. It often results from fluid retention and pressure from a growing uterus on circulation in the lower limbs. This swelling is usually mild, symmetrical and improved in the morning after rest.

Swelling worth flagging has a different pattern: sudden onset, involvement of the hands or face as well as the feet, or accompanying headache or visual changes. Rapid, asymmetrical or upper-body swelling needs prompt clinical assessment.

Daily records give "sudden" a clear timeline. Showing your midwife that ankle swelling was minimal on Monday, noticeable on Wednesday and affecting your hands by Friday provides clinically useful information that one appointment could miss.

5. General wellbeing shifts: mood, sleep and energy

These changes are easier to dismiss and harder to interpret alone. Exhaustion, low mood and difficulty sleeping are common throughout pregnancy. Usually, they reflect the physical and emotional demands of carrying a pregnancy rather than a condition needing treatment.

Log changes from your recent baseline, especially when they occur with physical symptoms. Persistent low mood in the third trimester, particularly with poor sleep, reduced appetite or detachment, is worth discussing with your midwife or GP. Maternity services take perinatal mental health seriously, and your team would prefer you to mention it rather than manage it alone.

Fatigue that develops suddenly, particularly with pallor or breathlessness, may suggest anaemia and should be mentioned at your next appointment. If you have had anaemia in this or a previous pregnancy, or fatigue is noticeably affecting daily life, mention it sooner.

The record matters as much as the signal

Across all five areas, a specific, documented account makes your conversation with your midwife more useful. You are not presenting a case. A timeline helps clinicians see patterns that a single check cannot. Your midwife is the right person to interpret your symptoms. Your role is to provide the clearest picture you can.

Daily monitoring does not replace your instinct to seek care. If something feels wrong, act today. Call your midwife, ring 111, or call 999 in an emergency. The record supports those conversations, it should not delay them.