When your bump suddenly tightens in late pregnancy, it can be surprisingly difficult to decide whether your body is practising or labour is beginning. Braxton Hicks contractions and early labour can overlap in how they feel, especially if this is your first baby. The most useful clue is not one single contraction but what happens over time: does the pattern settle, strengthen and keep going, or does it remain irregular and fade?
Braxton Hicks vs real contractions at a glance
Braxton Hicks contractions are practice tightenings of the womb. They are common in the second half of pregnancy and often become more noticeable in the third trimester. They may make your abdomen feel firm or squeezed, but they usually stay irregular, are more uncomfortable than painful and do not steadily become longer, stronger and closer together.
Real labour contractions work differently. As labour progresses, they tend to become more regular, stronger, longer and more frequent. The womb tightens and relaxes repeatedly, helping the cervix soften, thin and open so your baby can move down for birth. Some people describe them as increasingly intense period-type pains, while others feel pressure or pain in the lower abdomen, pelvis or back.
The pattern matters more than one painful contraction
A strong tightening does not automatically mean labour, and a mild contraction does not automatically mean Braxton Hicks. Early labour can begin gradually. The clearest signs of true labour often appear when you watch the overall pattern for a while rather than judging each sensation on its own.
Regularity and contraction timing
Braxton Hicks tend to come unpredictably. You might have two close together, then nothing for half an hour. Labour contractions usually develop a more organised rhythm as labour advances. For contraction timing, note when one contraction starts, when it ends and when the next one starts. The interval is measured from the start of one contraction to the start of the next, while duration is measured from the beginning to the end of the same contraction.
For example, imagine your contractions start at 8:10, 8:20, 8:29 and 8:37, each lasting a little longer and feeling stronger. Recording them as they happen makes that trend easier to see. A progressively closer, longer pattern is more suggestive of labour than scattered tightenings that fade or stop.
Strength and what happens when you change activity
Braxton Hicks may settle if you rest, change position, have a drink of water or move around after sitting for a long time. Labour contractions usually continue despite these changes and become harder to ignore as labour progresses. You may find yourself needing to pause, breathe or concentrate through them.
Do not rely on pain alone, though. People experience labour differently, and the latent or early phase may include contractions that are irregular for a while. If the pattern is changing, you are worried, or you simply cannot tell what is happening, your maternity team would rather you call for advice than try to diagnose labour from a checklist.
Other signs that can point towards labour
Contractions are only part of the picture. A “show” can occur when the mucus plug that has been sealing the cervix comes away. It may look like sticky mucus and can be pink or lightly blood-streaked. Labour may follow soon, but it can also be some time away.
Your waters may break as a gush or a slower trickle. Backache, pelvic pressure or an urge to use the toilet can also happen as labour approaches. None of these signs should be used on their own to decide how far labour has progressed, but together with a developing contraction pattern they can provide useful context.
When to call your midwife or maternity unit
NHS guidance says to contact your midwife or maternity unit if you think you are in labour, if you are having regular contractions every five minutes or more often, or if you are unsure or worried. Your own maternity team may have given you specific instructions based on your pregnancy, so follow those if they differ.
You should contact your maternity unit urgently if your waters break, you have vaginal bleeding, your baby is moving less than usual, you are under 37 weeks and think labour may be starting, any contraction lasts longer than two minutes, or you are having six or more contractions in 10 minutes. If you cannot reach your midwife or maternity unit, NHS guidance advises calling 111. Call 999 if you think your baby is coming now and you have a strong urge to push.
If your waters break, note the time and the colour or smell of the fluid. Use a sanitary pad rather than a tampon. Coloured or unpleasant-smelling fluid needs prompt assessment. Reduced fetal movement or bleeding should also be treated as reasons to seek advice rather than waiting to see whether contractions develop.
What to do if you are still unsure
If you are at term and have no urgent warning signs, try tracking the contractions for a short period while staying comfortable. Drink fluids, empty your bladder, change position and notice whether the tightenings ease or continue to build. This can help you describe the pattern clearly when you speak to your midwife.
A useful rule is to focus on direction of travel. Braxton Hicks usually stay inconsistent or settle. Labour tends to move forward: contractions become more regular, stronger and closer together. But bodies do not always follow a perfect timetable, particularly in the early phase, so uncertainty itself is a valid reason to contact your maternity unit.
Frequently asked questions
Can Braxton Hicks be painful?
They are usually described as uncomfortable rather than painful, but sensations vary. If tightenings become painful, regular or increasingly intense, contact your midwife or maternity unit for advice, especially if you are less than 37 weeks pregnant.
Can real labour contractions start irregularly?
Yes. Early or latent labour can be stop-start and may not immediately form a perfect pattern. What matters is whether contractions gradually become longer, stronger and more frequent, alongside other signs of labour.
Do Braxton Hicks cause the cervix to open?
Braxton Hicks are practice tightenings and do not produce the progressive cervical changes associated with established labour. Labour contractions help the cervix soften, thin and dilate as birth approaches.
Should I wait until contractions are five minutes apart?
Not if you have warning signs or feel worried. The five-minute pattern is a common point for contacting the maternity unit, but you should call sooner if your waters break, you have bleeding, your baby is moving less, you may be in labour before 37 weeks, or your maternity team has told you to contact them earlier.
The key difference to remember
The simplest comparison is progression. Braxton Hicks contractions generally remain irregular and do not steadily build, while real contractions tend to become longer, stronger and more frequent as labour advances. Timing can help you spot that change, but it is not a substitute for professional advice. If you are unsure whether you are experiencing Braxton Hicks vs real contractions, especially with any concerning symptoms, contact your midwife or maternity unit and describe exactly what you are feeling.