Braxton Hicks vs Real Labor: How to Tell the Difference

Braxton Hicks are practice tightenings of the uterus — named after the doctor who first described them in 1872. They can start as early as the second trimester (many people first notice them around week 20) but are most obvious in the third trimester.

What they feel like:

• A tightening or hardening of the belly, as if it turns into a firm ball, lasting 30 seconds to 2 minutes, then relaxing.
• Usually not painful — more like pressure or mild menstrual cramps.
• Irregular: no consistent rhythm, and the gaps between them keep changing.

What they do: they tone the uterine muscle for the real work ahead. What they do not do: open (dilate) the cervix or start labor. Common triggers include dehydration, a full bladder, physical activity, and — in the evening especially — simply being tired. That is why a glass of water and a lie-down make them fade.

Real labor contractions have a job to do — shortening and opening the cervix — and they behave differently from the first tightening:

• They come at regular intervals that get shorter over time.
• They get progressively longer, stronger, and closer together.
• They do not ease with rest, water, or a position change.
• They often start as a dull ache in the lower back and sweep around to the front, growing into intense waves that peak and release.
• As they build, walking and talking through them gets harder.

Real labor is defined by progression. One strong contraction means nothing; a pattern of contractions that keeps strengthening over an hour means a great deal.

Do this before you call — it is the same sequence clinicians suggest, and it gives you a clear answer in about an hour.

1. Drink a large glass of water. Dehydration is one of the most common Braxton Hicks triggers.
2. Change position and rest. If you were walking, lie down on your left side. If you were lying down, take a gentle walk. Rest for 30 to 60 minutes.
3. Empty your bladder. A full bladder can irritate the uterus and trigger tightenings.
4. Time what is left. If tightenings continue, time them properly: note when each contraction starts, how long it lasts, and the minutes between starts. If they are irregular and fading — Braxton Hicks. If they are regular and building — call your midwife.

The 5-1-1 rule is the widely used guideline most providers give their patients: call when your contractions are 5 minutes apart (measured from the start of one to the start of the next), each lasting 1 minute, and this pattern has continued for 1 hour.

A few honest notes about it:

• It is a guideline, not a law. Some providers use 4-1-1 or 3-1-1, especially if you live close to the hospital or this is not your first baby.
• If contractions get much closer together or much stronger before the hour is up, do not wait out the clock — call.
• Confirm your personal threshold with your own provider ahead of time, so you are not negotiating this at 3 a.m.

Pack your bag before you need it — our hospital bag checklist covers mom, baby, and partner.

Some situations skip the 5-1-1 rule entirely. Call your midwife or maternity unit right away if:

Our guide on when to call your midwife or doctor in pregnancy covers the full warning-sign list. The rule of thumb never changes: if something feels wrong, call. Nobody at a maternity unit has ever been annoyed by a cautious phone call.