Labor announces itself through a series of physical changes that can begin weeks, days, or hours before contractions start in earnest. Some signs are subtle and easy to miss, while others are unmistakable. Knowing what to watch for helps you tell the difference between “soon” and “right now.”
Your Baby Drops Lower in Your Pelvis
One of the earliest signs that your body is preparing for labor is called “lightening,” when your baby settles deeper into your pelvis. If this is your first pregnancy, this typically happens two to four weeks before delivery, though it can occur earlier. If you’ve had a baby before, your baby may not drop until labor itself begins.
You’ll likely notice the shift. Breathing feels easier because there’s less pressure on your diaphragm, but you may need to urinate more frequently as the baby’s head presses on your bladder. Your belly may look visibly lower, and walking can start to feel more awkward, almost like a waddle.
Mucus Plug and Bloody Show
Throughout pregnancy, a thick plug of mucus seals the cervix to protect your baby from infection. As your cervix begins to soften and open, that plug comes loose. You might notice it as a glob of thick, sometimes stringy discharge, or you might miss it entirely if it comes out gradually.
A “bloody show” is similar but tinged pink or streaked with blood. It means the small blood vessels in your cervix are breaking as it stretches. Both of these are encouraging signs, but the timing is vague: labor could follow within hours, or it could still be days away. On its own, losing your mucus plug doesn’t mean you need to rush anywhere.
Digestive Changes and the Nesting Urge
In the days or hours before labor, your body ramps up production of hormones called prostaglandins. These hormones soften the cervix and prepare the uterus to contract, but they also stimulate the intestines. The result for many women is loose stools or diarrhea. It’s not pleasant, but it’s a well-recognized prelabor sign. Some women also experience nausea or a general unsettled feeling in the stomach.
Around the same time, you may feel an intense urge to clean, organize, or prepare your home. Roughly three-quarters of women report noticing this “nesting” behavior during pregnancy. Whether it’s driven by hormones, anticipation, or a mix of both, that sudden compulsion to scrub the kitchen floor at 11 p.m. is a familiar prelabor experience for many.
How True Contractions Differ From False Ones
This is the distinction that matters most, and it trips up almost everyone at some point. Your body can produce convincing practice contractions for weeks before real labor, and two types are worth understanding.
Braxton Hicks contractions are irregular tightenings that don’t follow a pattern. They tend to stay weak or start strong and then fade. The discomfort is usually felt only in the front of your belly, and they stop if you change position, walk around, or drink water.
Prodromal labor is trickier because it can feel much more like the real thing. Contractions may come as close as five minutes apart and last up to a minute each. The key giveaway is that they never get closer together or stronger over time. They plateau and eventually stop. Without a cervical check, prodromal labor can be genuinely hard to distinguish from early labor, and it’s one of the most common reasons people head to the hospital only to be sent home.
True labor contractions follow a clear, recognizable pattern. They come at regular intervals and progressively get closer together. Each one lasts about 60 to 90 seconds. They steadily grow stronger, not weaker. And the pain typically starts in your back and wraps around to the front, rather than staying only in the belly. Changing positions, resting, or taking a bath won’t make them stop.
What’s Happening to Your Cervix
Behind the scenes, two things need to happen before your baby can be born: your cervix has to thin out (called effacement, measured as a percentage) and open up (dilation, measured in centimeters). Full dilation is 10 centimeters, and full effacement is 100 percent.
In the days or weeks before active labor, your cervix may slowly begin this process without you feeling much at all. Your provider might mention at a late-pregnancy appointment that you’re “a centimeter or two dilated” or “50 percent effaced.” That’s a sign your body is getting ready, but it doesn’t predict exactly when labor will start. Some women walk around at 3 centimeters for weeks. Others go from zero to active labor in a matter of hours. Think of early cervical changes as your body doing prep work rather than sounding an alarm.
When Your Water Breaks
Movies make it look like a dramatic gush in a grocery store, but for most people labor starts before the water breaks. Up to about 90 percent of women are already having contractions when their membranes rupture. When it does happen first, it can range from a sudden gush to a slow, steady trickle that’s easy to confuse with urine.
Amniotic fluid is typically clear or pale yellow and odorless. If you’re unsure whether your water broke, put on a clean pad and lie down for 20 to 30 minutes. If the pad is wet when you stand up, it’s more likely amniotic fluid than a bladder leak. Contact your care provider once you suspect your water has broken, since the timeline for delivery starts at that point.
The 5-1-1 Rule for Heading to the Hospital
Once you’re confident you’re having real contractions, the standard guideline for when to leave for the hospital or birth center is the 5-1-1 rule: contractions coming at least every 5 minutes, each lasting 1 minute, and this pattern holding steady for at least 1 hour. At that point, you’re past the “wait and see” phase and into active labor territory.
Time your contractions from the start of one to the start of the next. A contraction timer app makes this easier, but a clock works fine. If contractions are still 8 or 10 minutes apart, you generally have time to stay home, move around, take a shower, and let early labor progress. Some providers adjust the guideline (to 4-1-1, for example, or 3-1-1) depending on how far you live from the hospital or your specific medical history, so ask about this at a prenatal visit.
Signs That Need Immediate Attention
Most prelabor symptoms are normal parts of the process, but a few warrant a call or a trip to the hospital regardless of where you are in your timeline:
- Vaginal bleeding that’s heavier than light spotting, more like a period
- Severe or sudden headache that won’t go away, especially with vision changes like seeing spots, flashes of light, or blurriness
- Extreme swelling in your face or hands, particularly if it comes on suddenly
- Reduced fetal movement, meaning your baby seems to have stopped moving or is moving noticeably less
- Fever of 100.4°F or higher
- Severe abdominal pain that is sharp, constant, or worsening, rather than coming and going like contractions
- Trouble breathing or chest tightness
These can signal conditions like preeclampsia, placental problems, or infection that require prompt evaluation. Trust your instincts on this: if something feels seriously wrong, it’s always better to get checked and be reassured than to wait it out.