How the Body Prepares Itself for Labour Weeks in Advance

Labour may feel like it begins suddenly, but in reality, your body starts preparing weeks in advance. From hormonal shifts to physical signs like lightning or Braxton-Hicks contractions, your body steadily prepares for childbirth. This blog explains these changes step by step so you can relate to the final weeks of pregnancy and understand what to expect.

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It is easy to assume labour only begins when contractions become regular, but in truth, the groundwork is laid much earlier. In the last few weeks of pregnancy, subtle changes occur to ensure that you and the baby are ready to be born. Each sign is your body’s way of guiding you toward one of the most important moments of your life.

Signs Your Body is Preparing for Labour

Here are the changes that may begin weeks before birth, and the signs you can look out for as your due date draws near.

1. Your baby drops lower (Lightening)

Lightening is one of the first signs that your body is getting ready for labour, meaning the baby is moving down into the pelvis. This usually happens approximately 2-4 weeks prior to labour (although for some individuals, it may happen closer to delivery). You might experience:
  • Easier breathing, as the pressure on your lungs is reduced
  • More pressure on your bladder, resulting in more frequent urination
  • A heavy feeling in your lower abdomen

2. Cervical softening and thinning begin

The cervix (the lower part of the uterus) starts to change even before you go into active labour. Under the influence of hormones, the cervix will begin to soften, thin (efface), and sometimes even open a little (dilate) in the weeks leading up to labour.

You will not typically feel this happening, but your doctor may check your cervix during your appointments to determine how ready your body is for delivery.

3. Hormonal shifts begin

Hormones play a crucial role in preparing your body for childbirth. As you approach the end of your pregnancy, the levels of your oxytocin, oestrogen, and prostaglandins increase, while your progesterone levels decrease.
These hormone changes help:
  • Cause contractions in the uterus
  • Ripen the cervix to dilate
  • Prepare your breasts for lactation
You might also notice emotional changes, restlessness, anxiety, or bursts of energy (often referred to as the nesting instinct).

4. Braxton Hicks contractions become stronger

During the third trimester, you may have already experienced Braxton Hicks contractions (also known as "practice contractions"). As you get closer to labour, these contractions may become stronger and more frequent.

Unlike contractions of true labour, Braxton Hicks:
  • Are irregular in timing
  • Do not tend to intensify
  • Braxton Hicks are painless
  • Often disappear when you change your position or rest

5. Changes in vaginal discharge

It is possible to have an increased amount of vaginal discharge in the weeks before labour. Sometimes, that means passing the mucus plug, which is a thick collection of mucus that normally blocks the opening of the cervix during pregnancy.

As your cervix softens and begins to open, the mucus plug may come out, either all at once or in pieces. It can appear as the following:
  • Clear or slightly pink mucus
  • Sticky or jelly-like substance

6. Looser joints and pelvic pressure

Due to the hormone Relaxin, your ligaments and joints loosen, preparing for childbirth. This enables your pelvis to stretch enough for your baby to pass through during childbirth.
As a result, you may feel:
  • Increased range of movement in your joints
  • Some instability in your pelvis
  • A waddling type of gait when walking

7. Increase in energy or “Nesting Instinct”

Individuals commonly experience a sudden energy burst before labour, sometimes described as the nesting instinct. You may feel the need to clean, organise, or prepare your space for your baby.

This can be useful, but remember to take your time and not to overexert yourself. This increase in energy is related, in part, to hormonal factors and the subconscious preparation of your body for childbirth.

8. Digestive changes

Some individuals experience mild gastrointestinal changes, especially loose stools, during the days or weeks before labour starts. This is due to the body's release of prostaglandins, which cause the cervix to soften for labour, but can also affect the intestines.
Though it may be uncomfortable, this whole process can help clear the bowels, allowing the baby more room during labour.

9. Subtle weight and fluid changes

It is common during the latter stages of pregnancy to stop gaining weight or even lose a little. Hormone changes and fluid shifts generally cause this change. This is often a sign your body is preparing for labour, and it is usually normal. However, if you are worried or notice any other symptoms, it is always best to consult your doctor.

10. Emotional readiness

Your body is not the only thing that needs to get ready for labour; your mind also needs to prepare itself. Many individuals experience a range of feelings from excitement to nervousness. These emotional changes are normal and usually stem from hormone fluctuations.
It is just as crucial to relax, rest, and mentally prepare as it is to notice the physical cues.
Labour does not usually begin as a sudden event. It is the result of weeks of preparation, from the softening of your cervix and hormonal changes to practice contractions and emotional readiness. Each sign is part of the journey towards welcoming your baby. By noticing these changes, you can feel more prepared and empowered.
As delivery approaches, these signs can help you feel more prepared and confident. Every pregnancy is different, and some individuals might notice these signs sooner and more evidently than others. Be sure to keep your doctor in the loop for support and comfort.

Whether you’re pregnant, a new mom, or navigating postpartum, you don’t have to do it alone. Join our support group to connect, share, and support one another.

FAQs on How the Body Prepares Itself for Labour Weeks in Advance

  1. How can I tell the difference between Braxton Hicks contractions and true labour contractions?
    Braxton Hicks contractions are irregular, painless and typically cease with a change in position. Real labour contractions are regular, more painful, and closer in time.
  2. Does losing the mucus plug mean labour will start right away?
    No, not always. Labour can begin within days, but sometimes after a few weeks, losing your mucus plug. It simply indicates that your cervix is preparing.
  3. Is it normal to feel anxious or restless before labour?
    Yes. Hormonal changes often create mood swings or spontaneous bursts of energy (nesting instinct). These are normal symptoms of your body preparing for labour.
Disclaimer: Approved by Dr. Sangeeta Raodeo, Consultant, Gynecology & Obstetrics, Fortis Hospital, Mulund