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Signs mothers should expect when the baby's head is engaged at the pelvis

Updated April 17, 2017

Engagement, or lightening, refers to a baby's descent into the pelvis. When a baby is fully engaged -- or at 0 station -- his head rests against the narrowest part of your pelvis. For 65 per cent of first-time mums, engagement occurs up to two weeks before labour begins, according to childbirth educator Catherine Beier. Mums who have given birth may find their babies do not engage until labour begins. While engagement cannot tell you exactly when you will go into labour, it does indicate that your body is preparing for giving birth.

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Symptom relief

When a baby engages, her lower position in your pelvis relieves pressure on your ribs, lungs and stomach, which lessens some unpleasant pregnancy symptoms. You may be able to eat more at one time without feeling too full, breathe more easily and experience less heartburn. Since your baby has dropped from under your ribcage, you may find that she does not kick you as painfully in the ribs anymore.

Increased pressure

Other symptoms worsen once your baby has shifted his position down into your pelvis. Increased pressure on your bladder causes you to urinate more often and makes it difficult to sleep at night if you wake up multiple times to use the bathroom. Walking becomes painful due to greater pressure on your pelvis, and pain increases in your pelvic joints and perineum. You may even feel as if the baby could just fall out at any moment.

Change in belly

As your baby starts to engage, your belly shape changes. Your bump move downward, sometimes markedly enough that others comment on how your baby must have dropped. If the baby's head moves into the birth canal, your bump may shrink. Your fundal height -- a measurement from the top of your pubic bone to the top of your uterus -- may also be shorter after your baby has shifted into your pelvis.

Less fetal movement

By the time your baby has engaged, you will likely feel fewer and smaller fetal movements. This is because by the time a baby has dropped into the pelvis she has simply grown too large to flip and kick like she used to. At the end of pregnancy, over 95 per cent of babies have adopted the proper position for birth -- head down and with their chins tucked into their chests -- according to Dr. Amy B. Tuteur, and they tend to remain in this position, which reduces fetal movement.

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About the Author

Michelle Johnson

Based in southern Idaho, Michelle Johnson started writing in 1991. Her work has been published in the science fiction and fantasy journal, "Extrapolation." Johnson holds a Bachelor of Arts in creative writing and a Master of Arts in fantasy literature, both from Hofstra University in New York.

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