Late in pregnancy, a tightening belly can raise an immediate question: is labor starting, or is this a Braxton Hicks contraction? Braxton Hicks contractions are temporary uterine tightenings that do not by themselves mean the cervix is opening. Early labor, by contrast, is the first part of true labor, when contractions begin contributing to cervical change. The difficulty is that the two can feel similar, and there is no home test that can prove which one you are having.
The most useful approach is to look for a pattern over time rather than judging one contraction in isolation. According to the American College of Obstetricians and Gynecologists (ACOG), true labor contractions tend to become regular, closer together, longer, and stronger, while Braxton Hicks contractions are usually less regular and may ease with rest, hydration, walking, or a change of position. ACOG also notes that sometimes only an examination showing cervical change can confirm whether true labor has begun. Its patient guidance on this topic was last reviewed in November 2025. See ACOG's guidance on how to tell when labor begins.
Braxton Hicks contractions are often called “practice contractions.” They can occur for weeks before labor and can sometimes be uncomfortable or even painful. They do not necessarily mean that labor is about to begin.
Early labor, also called the latent phase of the first stage of labor, is the period when true labor is beginning. The cervix starts to soften, thin, and open. Cervical thinning is called effacement, and cervical opening is called dilation. These changes cannot be measured accurately at home.
That distinction matters: the sensation alone is not enough. A strong contraction can still be Braxton Hicks, while early labor contractions may begin relatively mildly.
Before your due date, make sure you know how your own maternity team wants you to respond. Hospitals and obstetric practices do not all use exactly the same “come in” threshold, and your instructions may differ if you have a high-risk pregnancy, live far from the hospital, have had a fast labor before, are expecting more than one baby, or have another reason for closer monitoring.
Keep these basics ready:
ACOG recommends discussing when to call, whether to call before going to the hospital, and any special instructions well before the due date. That preparation is more reliable than depending on a generic rule you found online.
| What to notice | Braxton Hicks is more likely to | True labor is more likely to |
|---|---|---|
| Timing | Stay irregular or unpredictable | Develop a regular pattern |
| Spacing | Not steadily get closer together | Become progressively closer together |
| Duration | Vary without a clear trend | Often lengthen over time |
| Strength | Stay similar, weaken, or come and go | Become stronger and harder to ignore |
| Response to activity | May ease with rest, walking, hydration, or position change | Usually continues despite rest or movement |
| Cervical change | Does not by itself indicate cervical opening | Is associated with progressive cervical change |
ACOG describes true labor contractions as typically lasting about 60 to 90 seconds once they are established, and notes that they continue despite changes in position or activity. The Mayo Clinic similarly advises looking for a pattern that becomes closer, longer, and stronger rather than relying only on pain intensity. See Mayo Clinic's overview of signs of labor.
When the tightenings begin to repeat, track several of them. Time each contraction from the moment the tightening starts until it fully relaxes. Then measure the interval from the start of one contraction to the start of the next.
Write down three things: how long each contraction lasts, how far apart the contractions are, and whether they are getting stronger. You can also note what happens after you drink fluids, empty your bladder, rest, walk, or change position. ACOG specifically advises observing whether contractions continue with rest and hydration.
A common mistake is to focus on one number, such as a “5-1-1” rule, without checking your provider's plan. Some maternity units tell patients to call when contractions are every five minutes or more often, but recommendations vary. The UK National Health Service, for example, advises calling the maternity unit when contractions are regular and occurring every five minutes or more often, while also telling patients to call sooner if they are worried or unsure. See NHS guidance on signs that labor has begun.
Contractions are only part of the picture. A few other changes can occur before or during labor, although none tells you the exact hour that birth will happen.
The cervix is sealed by mucus during pregnancy. As it begins to change, you may notice thick mucus that is clear, pink, or lightly blood-streaked. This is sometimes called a show. A show can happen shortly before labor or several days earlier, so it does not prove that active labor has started. Heavy bleeding is different and needs urgent assessment.
Rupture of membranes means the amniotic sac has broken. Fluid may come as a gush or a slow trickle. If you think your water has broken, contact your maternity team even if contractions have not started. ACOG specifically advises calling your obstetric care provider when this happens.
If fluid is foul-smelling or discolored, or you have significant bleeding, seek urgent maternity advice. NHS guidance also recommends using a pad rather than a tampon so the fluid can be assessed.
Labor contractions can be felt in the lower back, pelvis, abdomen, or a combination of these areas. ACOG notes that true labor pain often begins in the back and moves toward the front, while false labor is more often felt in the front. This is a clue, not a diagnostic test.
If the contractions are irregular and ease with rest, hydration, or a change in activity, Braxton Hicks becomes more plausible. You can continue observing if you otherwise feel well and your maternity team has not told you to come in sooner.
If they persist, become more regular, get closer together, last longer, or grow stronger, call your obstetric or maternity team. If you simply cannot tell, call anyway. ACOG emphasizes that uncertainty itself is a reasonable reason to contact your provider, because an examination may be needed to determine whether the cervix is changing.
Avoid repeatedly checking your own cervix. A self-exam is not a reliable way to measure labor progress and may introduce bacteria, especially if the membranes have ruptured.
Some symptoms should not be treated as a “Braxton Hicks versus labor” puzzle. Contact your maternity team urgently or go to the hospital according to your local emergency plan if you have any of the following:
If you are less than 37 weeks pregnant, the threshold for calling is lower. Preterm labor means labor that begins before 37 weeks. ACOG lists regular or frequent contractions or uterine tightening, pelvic pressure, a constant dull backache, changes in vaginal discharge, abdominal cramps, or ruptured membranes as reasons to seek prompt assessment. ACOG says not to wait if you have signs or symptoms of preterm labor. See ACOG's guidance on preterm labor and birth.
If you are at term, otherwise well, the baby is moving normally, your water has not broken, and there is no significant bleeding, begin by timing the tightenings and watching the trend. Rest, hydrate, empty your bladder, and try a different position or brief gentle movement if comfortable. Braxton Hicks contractions may settle; true labor contractions usually continue and become more organized.
If the pattern becomes regular, stronger, longer, or closer together, or if you are unsure whether labor is starting, contact your maternity team. If a red flag appears, do not wait for more contractions to “prove” that labor is real.
The key is not to diagnose yourself at home. The goal is to recognize patterns, know what information to report, and know when professional assessment matters. That is especially important before 37 weeks, after your water breaks, with heavy bleeding, severe continuous pain, or with decreased fetal movement.