Braxton Hicks vs Real Contractions: How to Tell the Difference

Feeling tightening across your belly in the third trimester is one of the most common — and most anxiety-producing — pregnancy experiences. The critical question is always the same: is this Braxton Hicks, or is this the real thing? The difference matters enormously, and there are reliable, evidence-based ways to tell them apart. This guide covers the comparison in full, the 5-1-1 rule explained plainly, what to do before 37 weeks, and exactly when to call your provider without waiting.

Braxton Hicks vs Real Contractions: Full Comparison

The table below is the fastest way to assess what you're experiencing. Check your contractions against each feature in real time.

If you're unsure which column describes your contractions, that uncertainty is itself useful information: move through the walk test and hydration check below before deciding whether to wait or call.

What Are Braxton Hicks Contractions?

Braxton Hicks contractions — named after the physician John Braxton Hicks who described them in 1872 — are sporadic uterine contractions that occur throughout pregnancy but become noticeably more frequent from around 20 weeks onward, and especially in the third trimester. They are the uterus practising the muscular coordination it will need for labour. They are real contractions in a physiological sense — the uterine muscle is genuinely contracting — but they do not cause the cervical changes that lead to birth.

Most people describe Braxton Hicks as a tightening or hardening of the abdomen that is uncomfortable but not typically painful. The entire belly firms up noticeably, often suddenly, and then releases. They tend to be felt mainly at the front of the abdomen rather than radiating to the lower back.

What Do Real Labour Contractions Feel Like?

Real labour contractions feel distinctly different from Braxton Hicks in several key ways. The pain typically begins in the lower back and radiates forward and around the lower abdomen — described as a wave of tightening that starts at the back, wraps around, and peaks at the front before releasing. This wraparound quality, combined with rhythmic timing and escalating intensity, is the hallmark of true labour.

Early labour contractions may start off feeling similar in intensity to strong Braxton Hicks, which is why the walk test and timing over at least 30–60 minutes are so important. The pattern over time — are they getting closer together? Lasting longer? Getting stronger? — is more diagnostic than how any single contraction feels in isolation.

The 5-1-1 Rule: When to Go to Hospital

The 5-1-1 rule is the standard benchmark used by obstetricians and midwives for when to go to hospital during labour. It means:

• 5 minutes apart — the start of one contraction to the start of the next is 5 minutes or less
• 1 minute long — each contraction lasts at least 60 seconds from start to finish
• 1 hour — this pattern has been consistent for at least 1 full hour
• AND — contractions are intensifying with movement, not easing

For first-time mothers, providers often advise applying the 5-1-1 rule strictly — early labour can last many hours and arriving at hospital too early can result in being sent home. For second or subsequent pregnancies, labour typically progresses faster and many providers recommend going at the first regular pattern rather than waiting for the full hour at 5-1-1.

Exceptions — Go Immediately Regardless of Contraction Timing

The 5-1-1 rule applies only when everything else is normal. Go to hospital or call 999/911 immediately if:

• Your water breaks (membranes rupture) — even before contractions begin
• You have heavy vaginal bleeding with any contractions
• Baby's movement has reduced significantly or stopped
• You feel an urge to push
• You have a high-risk pregnancy (twins, pre-eclampsia, placenta praevia, previous preterm birth)

The Walk Test: The Most Reliable Self-Check

Before you've reached the 5-1-1 threshold — when you're in the earlier phase of contractions and aren't sure what you're feeling — the walk test is the single most reliable self-check available at home.

How to do it: Walk around briskly for 10–15 minutes. Pay attention to whether the contractions ease, pause, or intensify while you're moving.

• If contractions ease or stop while walking: Almost certainly Braxton Hicks. Real contractions use walking as fuel — movement encourages labour to progress.
• If contractions intensify while walking: This is a strong indicator of real labour. Continue timing them and begin preparing to go to hospital when you reach 5-1-1.
• Unclear: Rest for 20 minutes, drink two large glasses of water, and repeat. Braxton Hicks almost always ease within this window if dehydration was a contributing factor.

The walk test works because Braxton Hicks are practice contractions — they respond to the body's inputs like position and hydration. Real labour contractions are driven by a complex hormonal cascade (oxytocin, prostaglandins, cervical stretch receptors) that walking actively stimulates rather than suppresses.

Contractions Before 37 Weeks: When It's More Urgent

If you are between 28 and 36 weeks pregnant, regular contractions are a preterm labour warning sign and require immediate attention. The 5-1-1 rule is designed for term labour. Before 37 weeks, the threshold for calling your provider is much lower.

Before 37 weeks: call your provider when contractions come every 10 minutes or more frequently — do not wait to reach 5-1-1. Preterm labour can progress quickly and needs same-day evaluation regardless of how long each contraction lasts or how intense they feel.

Warning Signs of Preterm Labour (Weeks 28–36)

• Regular contractions every 10 minutes or closer before 37 weeks
• Pelvic pressure — a feeling that the baby is pushing down or "falling out"
• A change in vaginal discharge (increase in mucus, or watery/bloody discharge)
• Fluid leaking from the vagina in any amount — even a trickle
• Dull, persistent lower back pain alongside regular contractions
• Menstrual-like cramps, with or without diarrhoea

If you are at 29 weeks and contractions are increasing in frequency, see our guide to Braxton Hicks at 29 weeks: when they're normal. For a full review of what regular contractions mean at 34 weeks and how to distinguish them from the real thing at that gestational age, see our guide to preterm labour signs at 34 weeks.

At 37–40 Weeks: Applying the 5-1-1 Rule

From 37 weeks (early term), your pregnancy is considered term and your baby is ready to be born. This is when the 5-1-1 rule applies fully. Understanding the phases of labour helps you know what to expect and when to act.

Early Labour (Latent Phase): Stay Home

Early labour, also called the latent phase, is characterised by contractions that are 10–15 minutes apart and may last 30–45 seconds. They are uncomfortable but manageable, and they have not yet reached the 5-1-1 threshold. For first-time mothers, this phase can last several hours to an entire day, sometimes longer. During early labour:

• Stay home — arriving at hospital too early often leads to being sent home and can increase the likelihood of medical intervention
• Eat a light meal and stay hydrated — you need energy for active labour ahead
• Rest when you can — conserve energy, especially at night
• Start timing contractions with an app so you can track the pattern accurately
• Walk when contractions feel manageable — this encourages labour to progress

Active Labour: Go Now

Active labour begins when contractions are regular, approximately 5 minutes apart, lasting 1 minute, for at least 1 hour — the 5-1-1 threshold. At this point, your cervix is typically dilating actively and you should head to hospital. Contractions in active labour are intense and increasingly difficult to talk through.

Go Immediately at 37–40 Weeks If:

• Your water breaks — even without contractions
• You have heavy vaginal bleeding
• You feel an urge to push
• Baby's movement has significantly reduced or stopped
• Contractions are so intense you cannot manage at home regardless of timing

For a detailed guide to what early labour looks and feels like from 37 weeks, see our early term labour signs at 37 weeks guide. For a full walk-through of applying the 5-1-1 rule at 38 weeks, including real contraction patterns and when to call your midwife, see real labour at 38 weeks: the 5-1-1 rule explained.

What Triggers Braxton Hicks and How to Ease Them

Braxton Hicks have identifiable triggers, and knowing them helps both reduce their frequency and confirm, after the fact, that what you experienced was practice contractions rather than labour.

Common Triggers

• Dehydration: The most common trigger. Even mild dehydration — not drinking enough in the afternoon — can cause a cluster of Braxton Hicks in the evening.
• Sexual activity: Orgasm causes uterine contractions (this is normal and not harmful to the pregnancy). Semen also contains prostaglandins that can stimulate Braxton Hicks. They typically settle within 20–30 minutes.
• Full bladder: A full bladder puts pressure on the uterus and can trigger contractions. Emptying your bladder is one of the first steps when Braxton Hicks start.
• Physical activity: Vigorous exercise or lifting can trigger Braxton Hicks. Taking a rest and drinking water usually resolves them within 15–20 minutes.
• Touch on the bump: External pressure — including from a baby shower, massage, or partner touching the bump — can stimulate a practice contraction.
• Being on your feet for extended periods: Long periods of standing or walking without rest can provoke Braxton Hicks in the third trimester.

How to Ease Braxton Hicks

• Drink 2 large glasses of water immediately — dehydration is the most common underlying cause and the fastest fix
• Change position — if you've been sitting, stand up; if you've been standing, sit or lie down
• Lie on your left side for 20 minutes — left lateral position improves uterine blood flow and is the most effective resting position in late pregnancy
• Warm bath — a warm (not hot) bath can relax the uterine muscle and ease practice contractions
• Empty your bladder — if there's any chance you need to urinate, do so before assessing the contractions

If contractions ease within 20 minutes of hydrating and changing position, Braxton Hicks is the confirmed diagnosis. Note what triggered them so you can prevent the pattern in future — most commonly, this means increasing your daily water intake, particularly in the afternoon and evening.

When to Call Your Provider Now

If you are uncertain whether what you're experiencing meets any of these criteria, call your provider or maternity unit. There is no such thing as calling too early when it comes to possible labour before 37 weeks or any of the red-flag symptoms above. Maternity triage units are accustomed to assessment calls and would always rather you call than wait.

A Note on First vs Second Pregnancies

The rules above apply to all pregnancies, but two differences are worth knowing if this is your second or subsequent pregnancy. First, Braxton Hicks are typically stronger and more frequent from the second pregnancy onward — the uterus has done this before and practises more vigorously. Second, labour tends to progress faster in subsequent pregnancies, sometimes dramatically so. Many second-time mothers reach the 5-1-1 threshold faster than expected or find that labour is already advanced when they arrive at hospital. If this is not your first baby, it is generally safer to call your provider earlier in the process — when contractions become regular, regardless of whether you've reached 5-1-1.