Loss of the mucus plug
Physical changes are the first visible signs in the expectant mother. One of the most common signs in the days before labour is the loss of the mucus plug, which helps protect the baby during pregnancy. It is a gelatinous substance that seals the cervix throughout pregnancy. The mucus plug can detach at any point in the days or weeks before labour begins, though in some cases it is only released once labour is already under way.
Contractions before labour
Another sign that labour may be approaching is the appearance of Braxton Hicks contractions — irregular but sometimes more frequent and intense than usual. Although these are not yet labour contractions, they indicate to the mother that the uterus is preparing itself. They occur unpredictably, with varying durations and intensities, without a defined rhythm, and do not contribute to cervical dilation. Generally, they gradually ease off, disappear, and may reappear at times.
Use the following questions to help you distinguish between Braxton Hicks contractions and labour contractions:
- Are they regular? Time them from the start of one to the start of the next. Look for a rhythm that becomes closer together over time. Labour contractions are generally spaced 2 to 5 minutes apart. Braxton Hicks contractions can come and go without any particular pattern.
- How long do they last? Time the duration of each contraction. Labour contractions last approximately 60 to 90 seconds.
- Do they stop? Labour contractions continue no matter what you do. They also continue whether you stand up, sit down or lie down. Braxton Hicks contractions can stop when you walk, rest or change position.
- Are they getting stronger? Labour contractions intensify over time and it becomes difficult to speak during them. Braxton Hicks contractions are generally mild. They may also start quite intense and then ease off.
Changes to the cervix
It may also begin to open slightly — something that only a medical examination can confirm. This will in particular be identified during the vaginal examination carried out by the doctor. This makes it possible to determine the position, tone, length and degree of opening.
Increased vaginal discharge
Many women notice an increase in vaginal discharge (leucorrhoea) during pregnancy. Sometimes this discharge increases considerably in the weeks and days before the birth, as your body prepares for your baby's arrival. Leucorrhoea plays an essential role in the self-cleansing of the vagina.
Other signs in the days before labour
At the same time, the baby descends into the pelvis, creating a sense of lightness around the ribcage but increased pressure on the perineum and bladder. This process is often accompanied by lower back pain or cramps in the lower abdomen. This pressure also makes you feel the need to urinate more frequently.
Some women also notice digestive changes, such as diarrhoea or nausea, brought on by increased hormonal activity and the baby descending into the pelvis.
The end of pregnancy signals your body to release more relaxin hormone, which loosens your joints and ligaments in preparation for the birth. In the days leading up to labour, you may notice that your pelvic and lumbar joints feel more supple and relaxed.
All of these are signs that labour may be imminent, but they can also occur earlier and precede the due date.