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Due dates are not always accurate
Pregnancy

Due dates are not always accurate

3 min readWeek 41
Key takeaways
3 min
  • Understand that due dates are estimates and no one knows exactly what triggers labor onset.
  • Monitor contractions carefully - call your doctor when they occur every 5 minutes and last over 40 seconds.
  • Expect breast changes including colostrum leakage, which provides essential antibodies for your newborn.
  • Watch for discharge changes like white or pink mucus plug release, which signals cervix preparation for birth.
  • Improve sleep quality with blackout curtains, support pillows, and avoiding screens before bedtime.

Due dates are estimates, not exact predictions, because no one knows precisely what triggers labor. Most babies are born within two weeks of their estimated due date, making the actual timing unpredictable despite medical calculations.

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Due dates are not always accurate

You thought that by this time you would have already given birth. While a long wait can be frustrating, try to relax during these last few days before birth. The due date your doctor gave you is just an estimate, no one knows exactly what makes a women go into labor [1].

Most likely, you already know all about training contractions. They may occur more often now than before but are still painless. Actual labor contractions will feel different and become increasingly stronger. Call your doctor when contractions come every five minutes and last longer than 40 seconds [2].

If your water has broken, but contractions have not started after six hours, your doctor may want to induce your labor [3].

Rest assured your body is ready for childbirth! Your breasts have augmented in size and may start leaking a thick, yellow liquid. This first milk is called colostrum and will nourish your newborn during the first few days [4]. Colostrum contains antibodies and promotes healthy intestinal flora.

It is often difficult for mamas to get a good night’s sleep during these final days of pregnancy. It does not affect your baby but may have you feeling quite tired. Try making your bedroom dark with blackout curtains to help improve sleep quality and place pillows under your belly and between your legs to make yourself more comfortable. As always, it is best not to use your smartphone or computer before going to bed [1].

If you are expecting twins

Don't worry if you feel you don't have enough milk for two babies. Keep in mind that the more the babies nurse, the more milk you will produce. Mothers of twins actually make twice as much milk as mothers of single babies. The milk is also higher in calories, as twins need to gain weight faster and mom’s body will adjust to this demand.

Discharge

Discharge should be thick, light in color, uniform, and with no unpleasant odor. At this time, you may release white or pinkish mucus. This is the mucous plug, which begins to dislodge as the cervix softens as part of the birthing process [5].

Leakage or profuse discharge of clear fluid is a sign of imminent labor, so inform your doctor. If you notice bloody discharge, seek immediate medical assistance [6].


Frequently asked questions

Due dates are estimates, not exact predictions. Most babies are born within two weeks before or after their due date, as no one knows precisely what triggers labor.

Contact your doctor when contractions occur every 5 minutes and last longer than 40 seconds. This pattern indicates you may be in active labor.

Colostrum is the thick, yellow first milk that may leak from breasts in late pregnancy. It contains antibodies and provides essential nutrition for newborns during their first few days.

The mucus plug appears as white or pinkish discharge and indicates your cervix is softening for birth. This is a normal sign that your body is preparing for labor.

Medical Disclaimer

This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or qualified health provider with any questions you may have regarding a medical condition.

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Medically reviewed content

Reviewed by healthcare professionals · Updated June 2, 2025

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