Pregnancy Week 25 – The Baby’s Progress

By pregnancy week 25 your baby’s spine, which has developed and solidified enough to support the baby’s weight now consists of 33 rings, 150 joints and 1000 ligaments. Their heart rate has also slowed down from 180 to 140-50 beats per minute. From this point onwards, monitoring and getting read outs of the heart rate patten on a cardiotocograph (CTG) machine becomes one of the most useful methods of assessing your baby’s well being.

Pregnancy at 25 weeks

The lungs, which up until a couple of weeks ago, were simply solid bags of sponge have begun the early growth of air sacs, airways and blood vessels. Although your baby’s lungs are displaying the motions of breath intake along with the nostrils, if your child were to be born during pregnancy week 25 they would require breathing aid as the lungs could still not cope outside of the womb. The maturing of the lungs is now going to rapidly increase in the coming days and weeks.

Your baby’s pancreas has also begun producing it’s own insulin in these last couple of weeks too so now is the time to have your screening (between weeks 24-28) for Gestational Diabetes as you head into your third and final trimester to ensure that your baby is not producing excessive amounts of their own insulin, due to the high levels of glucose in your body. This could otherwise lead to excessive baby growth and other possible health complications.

The pancreas has now begun to function in your 25 week fetus

The tiny blood vessels (villi) in the placental walls now become more permeable as the pregnancy progresses so that the amount of nutrients passed to the baby increases and greater quantities of waste are eliminated. It is said that as your baby’s left and right brain are still maturing, as always, it is a good idea to engage them in regular, repeated sounds, such as music as this will encourage brain connection and activity between the two halves, right side engaging with the music and the left side with the words.

Pregnancy at 25 weeks will see your baby measuring around 10” (25.4cm) crown to rump or 16″ (40.6 cm) crown to heel and weighing approximately 1.75 lbs (794 g). Your uterus will now be around 2.5” above your belly button and around 10” (25.4 cm) above your pubic bone. From now on you will look to grow about 0.4” (10 mm) per week and should have a total weight gain of approximately 16-20 lbs (8-9 kg) if you have been following a healthy and nutritious pregnancy diet.

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