A single Braxton Hicks contraction typically lasts around 30 seconds, though some can stretch to a minute or two. They vary quite a bit from person to person and even from one episode to the next, but they don’t get progressively longer or stronger the way real labor contractions do. Most people start noticing them from around 28 weeks of pregnancy onward, though the uterus may begin practicing these tightenings earlier without you feeling them.
What a Single Contraction Feels Like
Braxton Hicks contractions feel like a tightening or hardening across your abdomen. You might even see your belly go visibly taut for several seconds before it relaxes again. Unlike true labor contractions, which start at the top of the uterus and move downward in a coordinated wave, Braxton Hicks tend to stay focused in one area and don’t radiate through the whole uterus. They’re uncomfortable, but they’re not usually painful in the way you’d describe a strong menstrual cramp or labor pains.
The duration of each one can vary. Some last only 15 to 20 seconds. Others hold for up to two minutes. There’s no predictable pattern to how long each one will be, and the next contraction might feel completely different from the last. This inconsistency is actually one of the hallmarks that separates them from the real thing.
Frequency and Pattern
Braxton Hicks contractions are irregular. You might have several in one afternoon and then none the next day. They don’t follow a rhythmic pattern, they don’t get closer together over time, and they taper off and disappear on their own. Some people notice them a few times a day, while others experience them only occasionally throughout the third trimester.
As you get closer to your due date, you may notice them more often or feel them more intensely, but even then they remain unpredictable. They still won’t settle into a steady rhythm or build in strength the way labor contractions do.
Common Triggers
Several things can set off a round of Braxton Hicks contractions. Dehydration is one of the most common triggers. Physical activity, a full bladder, sex, or even your baby moving around can prompt them. Sitting or standing in the same position for a long time also seems to bring them on for many people.
Knowing the triggers matters because it also tells you how to stop them. Drinking a glass or two of water, changing positions, getting up for a short walk, or lying down if you’ve been on your feet can all help them ease off. A warm bath can relieve the muscle tension and any discomfort that lingers. If the contractions stop when you change what you’re doing, that’s a reliable sign they’re Braxton Hicks and not labor.
Braxton Hicks vs. True Labor Contractions
The core difference comes down to progression. True labor contractions get longer, stronger, and closer together over time. Braxton Hicks do none of those things. Real contractions also produce a pain that travels through the uterus in a wave, often radiating into the lower back. Braxton Hicks stay localized and feel more like pressure or tightness than deep pain.
A useful benchmark is the 5-1-1 rule, which UT Southwestern Medical Center uses to help patients gauge real labor: contractions coming every 5 minutes, each lasting at least 1 minute, and continuing at that pace for 1 hour. Braxton Hicks will never meet all three of those criteria. They’ll stall, space out, or simply stop.
Another telling difference is what happens when you move. Braxton Hicks often ease up or disappear when you change positions or take a walk. True labor contractions persist no matter what you do.
When Contractions Need Attention
Before 37 weeks, regular contractions could signal preterm labor rather than simple Braxton Hicks. The general threshold is six or more contractions in a single hour. If you’re counting that many, especially if they feel more rhythmic than random, that warrants a call to your provider even if the contractions aren’t particularly painful.
Other signs that your contractions may not be Braxton Hicks include fluid leaking from the vagina, vaginal bleeding, increased pelvic pressure, or contractions that keep building in intensity rather than fading away. At any point in pregnancy, contractions that follow a clear pattern of getting stronger, longer, and closer together are worth having checked.
How to Manage the Discomfort
Most Braxton Hicks contractions are mild enough that you can simply wait them out. When they’re more bothersome, a few strategies consistently help:
- Hydrate. Drink a full glass of water as soon as you notice tightening. Dehydration is such a reliable trigger that rehydrating alone often stops them.
- Change positions. If you’ve been sitting, stand and walk. If you’ve been active, sit or lie on your side. Shifting every 30 minutes can prevent them from starting in the first place.
- Take a warm bath. The warmth relaxes the uterine muscle and can cut a string of contractions short.
- Rest. If you’ve been on your feet for a while, lying down with your legs slightly elevated gives your body a chance to reset.
These contractions are a normal part of pregnancy. Your uterus is a muscle, and like any muscle it contracts periodically. Braxton Hicks are essentially your uterus warming up, toning itself in preparation for the work it will eventually do during labor. They don’t cause your cervix to dilate, and they pose no risk to you or your baby.