True labor contractions come at regular intervals, get closer together over time, and each one lasts about 60 to 90 seconds. That pattern is the single most reliable sign you can track at home. But labor also announces itself through other changes, some obvious and some easy to miss, and knowing what to look for can save you from unnecessary hospital trips or, more importantly, from waiting too long.
True Contractions vs. False Contractions
The biggest source of confusion in late pregnancy is figuring out whether your contractions are the real thing. True labor contractions have three defining features: they follow a regular pattern, they get progressively closer together, and they don’t stop when you change what you’re doing. Each one typically lasts 60 to 90 seconds.
False contractions (often called Braxton Hicks) have no consistent pattern and don’t get closer together. They may feel uncomfortable, but they tend to fade if you rest, drink water, or change positions. True labor contractions keep coming whether you’re lying down, walking around, or sitting in a warm bath. If you’re unsure, try resting and hydrating. If the contractions disappear, they weren’t true labor.
Prodromal Labor: The Tricky Middle Ground
Some women experience something called prodromal labor, which can be genuinely confusing because the contractions mimic real labor closely. They can come every five minutes, last up to a minute each, and feel mildly painful. The key difference is that prodromal labor never progresses beyond that point. The contractions don’t get stronger or closer together over time, and they don’t cause your cervix to open.
A helpful benchmark: you’re likely in true labor if contractions are coming less than five minutes apart, lasting longer than one minute each, and this pattern continues for over an hour straight. Prodromal labor stalls before reaching that threshold. The only definitive way to rule it out is a cervical check by your provider, but tracking the pattern at home gives you a strong indication either way.
Your Water Breaking
Not everyone’s water breaks before contractions start, and it rarely happens the dramatic way it does in movies. When it does happen, amniotic fluid is mostly clear or pale yellow (like the color of straw) and has no smell. That’s how you can distinguish it from urine, which is common to leak in late pregnancy. Urine has a noticeable odor, while amniotic fluid is odorless.
The flow can range from a sudden gush to a slow, steady trickle that soaks through your underwear. If you suspect your water broke but aren’t sure, put on a clean pad and check it after 30 minutes. A pad that’s wet with odorless, clear or straw-colored fluid is a strong signal. Contact your provider, because once your membranes have ruptured, labor typically needs to begin within a certain timeframe to reduce infection risk.
Bloody Show and Mucus Plug
As your cervix begins to open, you may lose your mucus plug, a thick, jelly-like discharge that has sealed the cervical opening throughout pregnancy. It can come out all at once or in smaller pieces over several days. You might notice it on toilet paper or in your underwear.
A “bloody show” is related but slightly different. It’s mucus-like discharge streaked with blood that can be red, brown, or pink. The texture is stringy or gelatinous. Seeing a bloody show means your cervix is actively dilating, but it doesn’t tell you exactly when labor will start. For some women, contractions begin within hours. For others, it’s still days away. On its own, a bloody show isn’t a reason to rush to the hospital, but it’s worth noting the timing so you can share it with your provider.
Digestive Changes Before Labor
In the 24 to 48 hours before labor begins, some women experience a wave of nausea or diarrhea. This isn’t universal, but if you suddenly feel like you have a stomach bug at 39 weeks, it may be your body clearing out in preparation for delivery. Hormonal shifts, particularly a rise in prostaglandins that help soften and thin the cervix, are also responsible for loosening the bowels. It’s unpleasant but normal, and it’s often one of the earliest subtle clues that labor is approaching.
Back Labor Feels Different
About one in four laboring women experiences what’s known as back labor, where pain is concentrated in the lower back and tailbone rather than (or in addition to) the abdomen. This typically happens when the baby is facing your belly instead of your spine, so the back of the baby’s skull presses against your lower back during contractions.
Back labor has a distinct quality that catches people off guard. Standard contractions come in waves with breaks in between. Back labor can feel constant, with intense pressure or spasming that doesn’t fully let up between contractions. Women describe it as excruciating and fundamentally different from the cramping they expected. A short torso or carrying a larger baby can also contribute to the intensity, because there’s less room for the baby to rotate within the pelvis. If you’re feeling relentless lower back pain alongside other labor signs, that counts.
What’s Happening With Your Cervix
You can’t check this at home, but understanding the process helps you make sense of what your provider tells you at appointments or at the hospital. Your cervix needs to do two things before delivery: thin out (called effacement, measured as a percentage from 0% to 100%) and open (called dilation, measured in centimeters from 0 to 10).
Early in labor, your cervix might be 60% effaced and 1 to 2 centimeters dilated. As labor progresses, it thins to 90% and opens to 4 or 5 centimeters. Vaginal delivery requires the cervix to be fully effaced (100%) and fully dilated (10 centimeters). When your provider says you’re “a few centimeters dilated” at a routine visit, that’s useful information but not necessarily a sign that active labor is imminent. Some women walk around at 3 centimeters for weeks.
When to Head to the Hospital
A widely used guideline is to go when your contractions are about five minutes apart, each lasting at least one minute, and this pattern has held steady for one hour. Before that point, you’re likely still in early labor, which is usually safest and most comfortable to manage at home.
There are situations where you should go right away, regardless of contraction timing. Heavy vaginal bleeding (soaking through a pad, not just the streaky discharge of a bloody show) needs immediate evaluation. A sudden, severe headache that doesn’t respond to rest and hydration, especially one accompanied by vision changes like seeing spots or flashes of light, can signal dangerously high blood pressure. The same goes for extreme swelling in your hands or face, trouble breathing, chest pain, or a fever of 100.4°F or higher.
A significant decrease in your baby’s movement is another reason to call immediately. If you notice the baby moving far less than usual, or you can’t get a normal kick count, don’t wait for contractions to decide. Severe belly pain that’s sharp, constant, and getting worse, rather than coming and going like a contraction, also warrants an urgent call.