Belly tightening all night: go to hospital now? How to tell practice contractions from real labor, the way moms time it
Practice contractions come irregularly, don't get stronger and fade when you change position. Real labor gets more frequent, longer and stronger. How to time them, and which signs mean go now.

It’s past 2 a.m., and your belly has tightened for who knows how many times now. Your husband is sleeping soundly, and you lie there rubbing your belly, going round in circles: “Should I just go? Or will they send me home?” Almost every mom in her third trimester has had a night like this.
Honestly, practice contractions and real labor can be told apart fairly clearly. You just need to time them and watch for other signs at the same time. We’ll sum up a method you can actually manage at 2 a.m., along with the signs where you don’t need to sit and time anything, just go to hospital right away.
What are practice contractions, and why does your belly tighten when you’re not in labor?
Quick Answer: Practice contractions (Braxton Hicks) are your uterus rehearsing. They feel like your belly going tight and hard, or a heavy ache like period pain. They come without a rhythm and don’t open your cervix.
Cleveland Clinic says practice contractions can start from the second trimester, and often have a trigger, such as:
- Not drinking enough (Thailand’s hot weather makes it very easy to get dehydrated)
- A full bladder
- Walking a lot, lifting heavy things, or doing housework all day
- After sex
During practice contractions, most moms can still chat and walk around as normal.
What’s the difference between practice contractions and real labor?
Quick Answer: Practice contractions come irregularly, don’t get stronger, and fade when you rest or change position. Real labor comes in a rhythm, gets more frequent, longer and stronger, and doesn’t go away whatever you do.
| Practice contractions | Real labor | |
|---|---|---|
| Rhythm | Come and go, no set timing | Rhythmic, evenly spaced, then closer together |
| Strength | Stay the same or get weaker | Keep getting stronger |
| Length | Short, don’t get longer | Keep getting longer |
| Where | Usually tightness at the front of the belly, or a heavy feeling in the groin | Often start as lower back pain, then spread to the front |
| When you rest or change position | Get better or go away | Don’t go away |
| Other signs | Usually none | May have a bloody show, or waters breaking |
The NHS sums it up in a short, easy-to-remember way: practice contractions are “not long, not frequent, and don’t gradually get stronger,” while real contractions get “longer, stronger and more frequent” as labor approaches.
How do you time contractions correctly?
Quick Answer: Record two things: frequency (from the start of this one to the start of the next) and duration (from start until it eases off), continuously for at least 30 to 60 minutes.
Just follow these steps:
- Open the stopwatch on your phone, or a contraction timer app
- When you start to feel your belly tighten, write down the start time
- When it eases off, write down the time. That gives you the duration of that contraction
- When the next one starts, write down the start time again. The gap from “start to start” is the frequency
- In the meantime, try drinking some water, going to the bathroom, then lying on your side to rest. If they are practice contractions, they usually spread out or stop on their own
An example log: 02:10 to 02:11, 02:17 to 02:18, 02:22 to 02:23. That means they are about 5 to 7 minutes apart, about 1 minute each, and starting to get closer together. At this point, you can start getting ready.
How frequent should contractions be before you go to hospital?
Quick Answer: A commonly used rule for a first baby is 5-1-1: contractions every 5 minutes, lasting about 1 minute each, for 1 hour straight. For a second or later baby, go earlier than that.
- 5: contractions every 5 minutes or closer
- 1: each one lasts about 1 minute
- 1: this pattern has continued for 1 hour
Srisukho Hospital uses this rule as a guideline. The NHS advises calling your maternity unit when contractions are regular, every 5 minutes or closer, and Synphaet Hospital advises that for a second or later baby, you should go as soon as real labor starts, because it is usually faster than with a first baby.
Some families need to leave even earlier, for example if you live far from the hospital, there’s evening rush-hour traffic in the city, or your doctor has said this pregnancy carries some risk. If it were us, we would ask the doctor at the 36-week appointment, “When should I come in with this pregnancy?” and write it down in the pink book (the Thai mother and child health record).
Go to hospital now if… (no need to time anything)
Quick Answer: Your waters break, you’re bleeding, your baby is moving less, you are under 37 weeks but having regular contractions, or the pain is so bad you can’t walk or talk. Go right away.
- Waters breaking: clear fluid leaking from your vagina, whether or not you have contractions. If the fluid is green or brown, or smells, it’s even more urgent
- Fresh blood from your vagina, more than a little mucus mixed with blood
- Your baby is moving less, or differently from usual (read how to check in Counting kicks in the pink book)
- You are under 37 weeks and having rhythmic contractions. It may be preterm labor
- The NHS says if each contraction lasts more than 2 minutes, or you have more than 6 in 10 minutes, contact the hospital right away
- Severe headache, blurred vision, pain just below your ribs may be signs of preeclampsia
- If you feel a strong urge to push, or think your baby is about to come out, call 1669 (Thailand’s emergency medical number)
If you go and they send you home, is that embarrassing?
Quick Answer: Not at all. Going in, having the nurse check that you’re not dilated yet, and being sent home to wait happens very often.
The labor ward nurse may do an internal exam to check how dilated your cervix is, and listen to your baby’s heartbeat. If you’re still in the early stage, they’ll send you home to rest and tell you when to come back. Look at it another way: you got a real practice run of the route, and a chance to check whether your hospital bag is complete.
What can you do while you wait at home?
Quick Answer: Drink water, go to the bathroom, take a warm shower, change position, and rest as much as you can. If they are practice contractions, they usually get better.
- Sip plain water often
- Walk slowly if you’ve been sitting for a long time, or lie on your side to rest if you’ve been on your feet all day
- Take a comfortably warm shower, and breathe long and slow
- Eat something light and easy to digest if you’re still hungry
- Wake someone at home to help record the times (yes, you’re allowed to wake them), so you can focus on your breathing
A night of tightening belly all night is truly exhausting, body and mind. Whether tonight is practice contractions or real labor, trust your instincts. If you feel uneasy, going in to let a nurse check you is never wrong.
Questions parents ask
01At how many months do practice contractions start?
Practice contractions can start from the second trimester, but are usually felt more clearly in the third trimester, and not everyone feels them.
02Is it dangerous if my belly tightens often?
Belly tightening that comes and goes irregularly and fades when you rest is usually practice contractions. But if you are under 37 weeks and the tightening is regular, or your waters break or you're bleeding, go to hospital right away, because it may be preterm labor.
03How many minutes apart should real contractions be before I go to hospital?
A commonly used rule is 5-1-1: contractions every 5 minutes, lasting about 1 minute each, for 1 hour straight. For a second or later baby, or if you live far from the hospital, go earlier than that, and ask your doctor in advance when you should come in.
04How do I time contractions?
Count from the start of one contraction to the start of the next: that is the frequency. Count from the start to when it eases off: that is the duration. Record them continuously for at least 30 to 60 minutes and the pattern will become clearer.
05My waters broke but I have no pain. Do I need to go to hospital?
Yes. If clear fluid is leaking from your vagina, whether or not you have contractions, put on a sanitary pad and go to hospital right away, and note the color of the fluid to tell the nurse.
06Does a bloody show mean I'm about to give birth?
A little mucus mixed with blood is a sign that your cervix is starting to change. You may give birth within a few hours or within a few days. But if it is a large amount of fresh blood, go to hospital immediately.
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