Signs of Labor

Source: *The Birth Partner* (5th ed.) — Penny Simkin with Katie Rohs

How Labor Actually Begins

Labor is not a single moment. It is a process that unfolds over hours or days, beginning with changes to the cervix long before contractions become strong and regular. Understanding what is happening physically makes it easier to stay calm and make good decisions about when to act.

Six things happen during labor, and they happen in roughly this order:

1. The cervix moves from pointing backward toward the tailbone to pointing forward (anterior)

2. The cervix softens, from firm (like the tip of a nose) to soft (like the inside of a cheek)

3. The cervix effaces (shortens and thins), from a thick cylinder to a thin disc

4. The cervix dilates (opens), from 0 to 10 centimeters

5. The baby's head (or presenting part) rotates to fit through the pelvis

6. The baby descends through the pelvis and is born

Most of the early work — the first three changes — happens during prelabor, often without any contractions the person is aware of. By the time active labor begins, the body has been working for days.

Reading the Signs: Three Categories

Possible Signs of Labor (days to weeks before)

These signal the body is preparing but labor has not started:

• Lightening (the baby drops lower in the pelvis) — breathing becomes easier, pressure on the bladder increases, waddling becomes more noticeable
• Increased Braxton Hicks contractions (irregular, painless to mildly uncomfortable tightenings)
• Pelvic pressure and low backache
• Increased vaginal discharge
• Energy surge ("nesting") or unusual fatigue
• Loss of 1 to 3 pounds of water weight
• Bloody show: a small amount of mucus tinged with pink or brown blood as the cervix begins to change. This can happen days before labor or right before.

Prelabor Signs (hours to days before)

These indicate labor is getting very close but is not yet established:

• **Nonprogressing contractions:** Contractions that come and go but do not become longer, stronger, and closer together over time. They may last hours and then stop. This is not "false labor" — it is real preparation. Call it prelabor.
• **Bag of waters leaking or releasing:** A slow trickle or a larger gush. See protocol below.
• Diarrhea or loose bowel movements (the body clears itself before labor)
• Low backache that comes and goes

Positive Signs of Labor (labor has started)

• Contractions that become progressively longer (building from 30 seconds toward 60 to 90 seconds), stronger, and closer together, regardless of activity or position change
• Bag of waters releasing with a pop or gush
• Bloody show that is more significant

The Bag of Waters

The amniotic sac may release before labor begins, during labor, or not at all until the caregiver ruptures it. When it releases:

**Observe and report four things to the caregiver:**

1. **Time** — when did it happen?

2. **Amount** — a trickle, a slow leak, or a gush?

3. **Color** — it should be clear or slightly pinkish. Yellow or green color indicates meconium (the baby's first bowel movement passed into the fluid) and requires prompt evaluation.

4. **Odor** — amniotic fluid is slightly sweet or odorless. A foul smell can indicate infection.

Call the caregiver immediately when the bag of waters releases, even if contractions have not started. This is true regardless of time of day. If Group B Strep (GBS) status is positive or unknown, the caregiver will want to begin IV antibiotics promptly.

Once the bag of waters has released, infection risk increases over time. The caregiver will give specific guidance on how quickly to come in.

Bathing is safe after the bag of waters releases, based on scientific trial data — contrary to older advice.

Prolapsed Cord Risk

In rare cases, if the baby's head is high and not engaged and the bag releases with a large gush, there is a small risk that the umbilical cord could slip down through the cervix before the baby. This is a true emergency. See the prolapsed cord protocol in quick-reference.

Timing Contractions

Contractions are timed in three ways:

• **Frequency:** From the beginning of one contraction to the beginning of the next
• **Duration:** How long each contraction lasts from start to finish
• **Intensity:** How strong the contraction feels (mild, moderate, strong)

Use the Early Labor Record or a contraction timing app to track these.

**The 4-1-1 Rule (for first-time birth):**

Go to the hospital or birth center when contractions are:

• 4 minutes apart (frequency)
• 1 minute long (duration)
• This pattern holding for at least 1 hour

**The 5-1-1 Rule (alternative):** Some caregivers use this variation. Confirm with your caregiver which guideline they want you to follow.

**For subsequent births:** Labor typically moves faster. Discuss specific criteria with the caregiver — often 6-1-1 or even "come immediately when contractions feel strong" for someone who has delivered before.

When to Call the Caregiver

Always call when:

• The bag of waters releases
• Contractions meet the 4-1-1 or 5-1-1 criteria
• There is bright red bleeding (more than a small bloody show)
• The laboring person feels the baby moving significantly less than usual
• Labor starts before 37 weeks (premature)
• There is a fever
• The laboring person feels something is wrong

When in doubt, call. Caregivers expect calls in the middle of the night. It is always okay to call and ask.

Prelabor vs. Labor: Practical Guidance

**Prelabor** contractions:

• Are irregular and do not follow a predictable pattern
• May stop when the person rests, changes position, or eats and drinks
• Do not get progressively longer, stronger, and closer over time
• May be uncomfortable but are manageable

**Early labor** contractions:

• Come in a regular pattern and build over time
• Continue regardless of activity or position
• Become more intense over hours

What to do in prelabor:

• Do not rush to the hospital — unless the bag of waters has released or something feels wrong
• Rest if it is nighttime; rest is more valuable than timing contractions for hours
• Stay hydrated and eat light, easy foods
• Distract yourselves during the day: walk, watch a movie, do something absorbing
• Time contractions periodically to check for progress, not continuously (continuous timing is exhausting and not helpful in prelabor)
• Call the caregiver if there is any uncertainty about what category you are in

The goal in prelabor is to arrive at the hospital or birth center already well into active labor, not to arrive at the very first contraction.

GBS (Group B Streptococcus)

GBS is a type of bacteria carried by approximately 1 in 4 pregnant people. Most carriers have no symptoms. If GBS is present in the vagina at delivery, there is a small risk the baby could develop a serious infection.

• GBS screening is done at 35 to 37 weeks with a swab culture
• If positive, IV antibiotics are given during labor, every 4 hours, until the birth. This reduces the risk of newborn GBS infection by over 99%.
• The main practical effect: once the bag of waters releases, the clock starts on getting to the hospital and beginning antibiotics
• If GBS status is unknown (e.g., testing was missed), the caregiver will advise treatment or monitoring

Antibiotics do not prevent you from laboring freely. The IV can be capped between doses with a heparin or saline lock so the person can move, use the tub, and be untethered most of the time.