Appearance
Signs labor may be starting
The hard part about labor starting is that it often does not announce itself cleanly. A single contraction, a gush of motivation to reorganize the freezer, or one episode of back pain does not tell you much. What matters is a pattern over time: contractions that get more regular, stronger, longer, and less likely to fade with rest, along with other changes like fluid leakage, bloody show, pelvic pressure, or a sense that your body has clearly shifted into work mode 12.
Signs that often fit early labor
Contractions are the classic sign, but early labor is often messy and uneven. In the latent or early phase, contractions may start irregularly and still be labor if they gradually become more intense and closer together. They may be felt in the abdomen, lower back, or both. Some people mostly notice back pain and pelvic pressure at first 12.
Other changes that may happen around the same time include:
- a "show" or bloody mucus discharge as the cervix begins to change 12
- a sensation that the baby has dropped lower, with more pelvic pressure and more frequent bathroom trips 23
- waters breaking as a gush or a steadier trickle 12
- diarrhea, nausea, shakiness, or a strong sense that labor is close, which can happen but are supporting clues rather than proof on their own 23
If fluid is green, brown, foul-smelling, or clearly bloody, that deserves prompt contact with your care team rather than quiet observation at home 12.
Signs that often turn out to be false starts
Braxton Hicks contractions usually feel irregular, do not steadily intensify, and may settle with hydration, rest, a change in position, or a bath. They can still be annoying enough to fool you, especially in a first pregnancy. The useful distinction is not whether they are "real" in some philosophical sense. It is whether they are changing the cervix and building into a consistent pattern 12.
Losing the mucus plug alone also does not mean birth is imminent. It can happen days before labor or around the time labor starts. Likewise, a sudden burst of nesting energy is common but should not be treated as a reliable triage tool 2.
What to track before you call
If you think labor may be starting, write down:
- when contractions began and how far apart they are
- how long each contraction lasts
- whether they are becoming harder to talk through
- whether they ease with rest, a shower, hydration, or food
- whether fluid is leaking, and if so the color and amount
- whether there is bleeding
- whether the baby is moving normally for that baby
That information gives your care team something they can actually use instead of "I feel weird, but also maybe nothing is happening" 12.
Call promptly if these happen
Call now or seek urgent assessment if you have heavy bleeding, decreased fetal movement, severe constant pain, fever, a clear rupture of membranes with signs of infection, or possible labor before 37 weeks 13. If the fluid is green or brown, or if you think the umbilical cord may be presenting, treat that as urgent 12.
If you are group B strep positive, have been told you need prompt antibiotics after rupture of membranes, live far from the hospital, have had a rapid prior labor, or have a high-risk pregnancy, your team may want earlier contact than standard public guidance suggests 13.
Preterm labor deserves a lower threshold
Before 37 weeks, regular contractions, pelvic pressure, low back pain, cramps, vaginal bleeding, or leaking fluid should be treated more seriously because preterm labor needs evaluation even when symptoms seem mild at first 3. Use the guidance your obstetric team gave you, but in the absence of instructions, call sooner rather than trying to wait it out.