# Preterm Labor

Source: https://www.pregnancypowerhour.com/conditions/preterm-labor
Last updated: 2026-07-15

> Preterm labor occurs when regular contractions cause changes to your cervix before 37 weeks of pregnancy, leading to a birth earlier than expected.

Preterm labor is a significant concern during pregnancy, characterized by regular contractions that lead to changes in your cervix before 37 weeks. Understanding what this means and how it's approached can bring a sense of clarity during what can feel like an overwhelming time. While it affects a notable percentage of births, particularly with higher rates observed among Black women, knowing the signs and working closely with your care team is key.

## What it is

At its core, preterm labor is defined by regular contractions that cause your cervix to begin changing – dilating or effacing – before you reach 37 weeks of pregnancy. This is distinct from Braxton Hicks contractions, which are typically irregular and do not cause cervical change. When your body begins preparing for birth earlier than anticipated, your care team will often use specific diagnostic tools, such as a fetal fibronectin test or a transvaginal cervical length ultrasound, to understand the situation more clearly. As a doula, I often remind clients that these tools help your providers gather information, which then informs the options available to you.

## What it tends to feel like

Recognizing the signs of preterm labor can feel different for everyone, but generally, it involves regular contractions that may or may not be painful, a feeling of pressure in your pelvis, a change in vaginal discharge, or a dull backache. These sensations might be subtle at first, making it easy to dismiss them. However, if you notice any of these signs, especially if they become consistent or increase in intensity, it's always wise to reach out to your care provider. Early communication with your team is crucial, allowing them to assess your unique situation and offer support.

## What the evidence says helps

When preterm labor is a concern, there are several evidence-based approaches your care team might discuss. One of the most well-supported interventions involves corticosteroids, like betamethasone, typically given between 24 and 34 weeks of pregnancy. Research, including findings from Cochrane and ACOG, shows these can dramatically accelerate the maturation of your baby's lungs, which is incredibly beneficial if an early birth occurs. Another option, magnesium sulfate, administered between 24 and 32 weeks, has been shown to reduce the risk of cerebral palsy if preterm birth happens. While tocolytics can sometimes delay delivery by about 48 hours, providing time for corticosteroids to take effect, they don't prevent preterm birth long-term. For those with a history of spontaneous preterm birth or a short cervix, progesterone, either through injections or vaginal application, has been found to reduce the risk of recurrence. Discussing these options with your provider allows you to make informed decisions that align with your preferences and your baby's needs. These are similar conversations to those you might have if managing conditions like [Gestational Diabetes](/conditions/gestational-diabetes) or [Preeclampsia](/conditions/preeclampsia), where proactive, evidence-based care is paramount.

## Working with your care team

Your care team is your primary resource in navigating preterm labor. They can help you understand the specific signs to look for and assess any potential risk factors. Some factors, like untreated urinary tract infections, bacterial vaginosis, dehydration, or smoking, are considered modifiable. This means there might be steps you can take in collaboration with your provider to support your pregnancy. For instance, ensuring adequate hydration or addressing a UTI promptly can be helpful. Open communication with your provider about any concerns or symptoms you're experiencing is essential. Just as with conditions like [ICP — Cholestasis of Pregnancy](/conditions/icp), understanding your body and advocating for your needs is a powerful part of your pregnancy journey. Remember, you get to decide what feels right for you and your baby, supported by clear, evidence-based information from your medical team.