Uterine Contractions: Are They a Sign of Preterm Labor?

Uterine contractions

I am currently 35 weeks pregnant, and for the past month or two, my belly has been frequently hardening.
This often happens when I go to the bathroom, walk, turn over, or get out of bed.
I experience contractions approximately every 20 minutes.
Is this a sign of preterm labor?

Xiaomin, 20~29 year old female. Ask Date: 2001/05/29

Dr. Zhan Deqin reply Obstetrics and Gynecology

1.
It is caused by uterine contractions, but it does not necessarily lead to preterm labor.
2.
If contractions are too frequent (such as more than 6 times in an hour), please see a doctor.
If there are further concerns, please visit the obstetrics and gynecology clinic.

Reply Date: 2001/05/29

More Info

Understanding uterine contractions during pregnancy is crucial, especially as you approach the later stages. At 35 weeks pregnant, experiencing hardening of the abdomen, often referred to as "Braxton Hicks contractions," is quite common. These contractions are typically irregular and can occur in response to various activities such as walking, changing positions, or even during bathroom visits.
Braxton Hicks contractions are often described as "practice contractions." They help prepare your body for labor by toning the uterine muscles. These contractions can feel like a tightening or hardening of the abdomen and usually last for about 30 seconds to 2 minutes. They are generally not painful, although some women may experience mild discomfort. The frequency you mentioned—about every 20 minutes—can be normal for Braxton Hicks, especially as you get closer to your due date.

However, it is essential to differentiate between Braxton Hicks contractions and true labor contractions. True labor contractions are typically more regular, become progressively stronger, and are accompanied by other signs such as lower back pain, pelvic pressure, or the loss of the mucus plug. If you experience contractions that are becoming more frequent, more intense, or are accompanied by any bleeding, fluid leakage, or significant discomfort, it is crucial to contact your healthcare provider immediately, as these could be signs of preterm labor.

Preterm labor is defined as labor that begins before 37 weeks of pregnancy. Signs of preterm labor can include:
1. Regular contractions (every 10 minutes or more often).

2. Lower back pain that may come and go or be constant.

3. Pelvic pressure or a feeling that the baby is pushing down.

4. Changes in vaginal discharge, such as an increase in fluid or blood.

5. Abdominal cramps that may feel like menstrual cramps.

If you are experiencing contractions every 20 minutes but they are not becoming more frequent or intense, and you do not have any other concerning symptoms, it may not indicate preterm labor. However, it is always best to err on the side of caution. If you have any doubts or concerns about your symptoms, contacting your healthcare provider for personalized advice is the best course of action.

In summary, while the contractions you are experiencing may be normal Braxton Hicks contractions, it is essential to monitor their frequency and intensity. If you notice any changes or have concerns, do not hesitate to reach out to your healthcare provider for guidance. They can provide reassurance and help ensure both your health and your baby's health as you approach the final weeks of your pregnancy.

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