Pregnancy at 25 weeks 

by BabyYumYum
Baby Yum Yum - Pregnancy at 25 weeks
Reading Time: 4 minutes

Your baby at 25 weeks is roughly the size of a turnip. They are roughly 31.8cm from the top of their head to their heel (crown-heel length) and weigh approximately 778g. 

You’re nearing the end of your second trimester, and your little one has come a long way. Last week they reached the age of viability, which is when their chance of survival outside of the womb passed 50 %. As each week passes, their chance of surviving a premature birth increases. 

pregnancy week 25 fetus weight and size compared to vegetable

Your baby at 25 weeks

Your baby now has noticeable human characteristics, like hair, skin, and nails. They are also starting to plump up and are adding more layers of fat each day. 

Here are the key developments your 25-week foetus is going through:


At 25 weeks, the part of your baby’s nose that can sense smell is now starting to function. They may even be able to smell scents and odors in the amniotic fluid. 

With this new nasal development, they are also able to start taking their first practice breaths. However, since there isn’t any air in the womb, they’re only “breathing” amniotic fluid right now. 


The foetus goes through four stages of lung development. This week, the canalicular stage (second stage) which started in week 16, is now complete. The structures responsible for gas exchange have formed and vascularised. 


The hair on your baby’s head is growing. The lanugo, which is the soft, thin hair that covers their tiny body, is also now in place. It won’t stick around for long, however. Around the seventh or eighth month of pregnancy, most fetuses will shed their lanugo. 

Your body at 25 weeks pregnant

As you get closer to your third trimester, you may notice new symptoms start to pop up. Here are some common changes your body may be going through during week 25 of pregnancy. 

  • Restless Legs Syndrome. If you find yourself with a strong desire to move your legs, you might be experiencing restless legs syndrome (RLS). This feeling is more common in the evening, although it can strike at any time. Although it’s not entirely clear what causes RLS, some experts believe it may result from low iron or folic acid levels.  
  • Hemorrhoids. More than 50 percent of pregnant women experience hemorrhoids. They’re a form of varicose veins and are caused by increased blood flow as well as the uterus pressing down on the rectum, which causes the veins to swell.Although they’re not dangerous, they can be quite uncomfortable and may cause rectal bleeding. Eating fiber-rich foods and keeping hydrated can help keep hemorrhoids at bay. 
  • Carpal Tunnel Syndrome. If your hands and wrists start to feel tingly or numb, it’s likely that you’re experiencing carpal tunnel syndrome. During pregnancy, you have an increased blood volume. This can cause your wrists to swell and extra pressure to be placed on the nerves. To reduce the symptoms of carpal tunnel, take frequent breaks from repetitive tasks that use your hands, or look into buying wrist splints. 
  • Thicker hair. Have you noticed that your hair is looking a little fuller these days? You’re not growing more, you’re just not shedding as much as you normally would, thanks to hormonal changes. Enjoy this fullness while it lasts – most women experience hair loss after giving birth.
  • Trouble sleeping. As your bump gets bigger, you may start to experience trouble sleeping at night. There are a few things you can do to help get some decent shut-eye. Try and drink more water earlier on in the day. That way, you won’t be interrupted with as many nighttime bathroom trips. Following a regular exercise routine can also help you enjoy a more sound slumber. Lastly, don’t underestimate the power of a comfortable pregnancy pillow. 

Taking care of yourself when pregnant at 25 weeks

Baby Yum Yum - Taking care of yourself when pregnant at 25 weeksNow is as good a time as ever to focus on your health and wellbeing.

Here are some tips for living your best pregnancy life:

  • Keep a journal. Writing your thoughts and feelings on paper can help you understand them better. It’s a great tool for improving your mental health, and it can be a valuable thing to look back on. Journaling can help inspire creativity, relieve stress, and set goals.
  • Look into antenatal classes. A great way to prepare for childbirth is to take antenatal classes. Most expectant parents find these classes very beneficial. They provide you with information on labor, birth, and caring for your newborn. Most people take these classes about 8 to 10 weeks before their baby is due, which is when they are 30 to 32 weeks pregnant. You still have a bit of time before you need to book into anything. But you might find several options in your area, so it’s best to get a head start with looking. 
  • Focus on dental health. Did you know there’s actually a link between good dental hygiene and carrying a baby to full term? It’s true, research has found a connection between expecting women and healthy oral practices. Keeping your mouth clean means you’ll reduce the risk of transmitting bacteria through your blood and amniotic fluid to your foetus. It’s these oral infections that can trigger premature delivery. Make sure to brush your teeth at least twice a day and floss regularly. 
  • Stay active. Working out prepares your body for the rigors of childbirth. This means women who regularly exercise are much more likely to have a smoother labor and delivery. It’s totally safe to stay active right until the end of your pregnancy. Just remember to choose pregnancy-safe workouts, like walking, swimming, and prenatal yoga. 

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