Yes, it is common to experience Braxton Hicks contractions as early as 20 weeks of pregnancy. These uterine tightenings, sometimes referred to as “practice contractions,” serve to prepare the uterus for the physical demands of labor. While they are a normal part of pregnancy, understanding their characteristics is helpful for expectant parents.
Understanding Braxton Hicks Contractions
Braxton Hicks contractions are the uterus’s way of rehearsing for childbirth. They manifest as an irregular tightening sensation across the abdomen, often described as more uncomfortable than painful. Unlike true labor, these contractions are unpredictable in frequency and duration, and do not progressively increase in strength or become closer together. They may last from less than 30 seconds to up to two minutes.
The physiological purpose of Braxton Hicks contractions involves toning the uterine muscle fibers, strengthening the uterus for labor. They can also promote blood flow to the placenta, supporting the developing fetus. While they can begin as early as six weeks gestation, most individuals become aware of them during the second or third trimester, often around the 20-week mark.
Telling the Difference: Braxton Hicks vs. True Labor
Distinguishing Braxton Hicks from true labor involves observing several characteristics. Braxton Hicks remain mild or weaken over time, unlike true labor contractions which become consistently stronger, longer, and closer together.
A key difference lies in how they respond to changes in activity. Braxton Hicks subside or disappear with movement, rest, or hydration. True labor contractions persist or intensify regardless of changes in position or activity. The sensation of Braxton Hicks is felt in the front of the abdomen, while true labor contractions may begin in the lower back and spread to the front. Braxton Hicks contractions do not cause changes to the cervix, such as dilation or effacement, which are hallmarks of true labor.
When to Contact Your Healthcare Provider
While Braxton Hicks contractions are a normal part of pregnancy, certain symptoms warrant immediate contact with a healthcare provider. If contractions become regular, strong, and increase in frequency or intensity, particularly if they occur every five minutes for an hour or more, seek medical advice.
Other concerning signs include any vaginal bleeding or spotting, or a sudden gush or trickle of fluid from the vagina. An increase in vaginal discharge, especially if watery, mucus-like, or bloody, should also be reported. Pelvic pressure, a feeling that the baby is pushing down, or a persistent low backache, particularly if new or worsening, are additional symptoms to monitor. Any noticeable decrease in fetal movement or severe abdominal pain also requires immediate medical attention.
Common Triggers and Relief Measures
Several common factors can trigger Braxton Hicks contractions. Dehydration is a frequent cause, as is increased physical activity. A full bladder or sexual intercourse can also stimulate these uterine tightenings. Simply touching the abdomen can initiate a contraction.
To alleviate the discomfort, several practical measures can be taken. Changing position or activity helps them subside. Staying well-hydrated by drinking water is an effective strategy. Resting, taking a warm bath if medically approved, or practicing relaxation techniques like deep breathing can further help manage the sensations.