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13 weeks pregnant

What to expect this week

What's happening in week 13 of your pregnancy

13 weeks pregnant

Week 13 is here, and you are probably sharing the news of your pregnancy with anyone who'll listen!

At a glance

  • Your little one is now about the size of an egg
  • Kidneys begin to function
  • Time to start looking for a capsule maternity wardrobe

How big is my baby at 13 weeks?

Your baby is around the size of an egg right now and has already learned some party tricks – kicking their legs, turning their head – even swallowing, yawning and hiccuping! How amazing is it that they are so active and developed yet so tiny? Also, at this stage, as their kidneys begin to actually function, any amniotic fluid your baby swallows, they will wee out.

Facts to know about your baby in week 13

  • Your baby is around 7.5cm long and about the size of an egg, weighing about 23g
  • Babies can taste the food their mothers eat in the womb and this may shape their preferences in later life
  • Your baby's vocal chords are beginning to develop

You at 13 weeks pregnant

You are probably feeling a lot more confident and secure in your pregnancy now you have reached the 13 week mark and your chances of miscarriage are so greatly reduced. It is probably also something of a relief to be sharing your news with your wider circle of friends (although how many immediately said they'd already guessed?).

You should be feeling a lot better generally now as your placenta takes over the production of pregnancy hormones, which should ease any nausea. You might even feel you are taking on a bit of a pregnancy bloom as your enter your second trimester!

As your baby is growing in leaps and bounds, you are probably noticing your clothes feeling a bit more snug now. Seize the moment to have a shopping spree and build a capsule maternity wardrobe to take you through the next six months in style (you might feel less inclined to spend all day in the shopping mall once your bump has further blossomed).

Facts to know about you in week 13

  • Some say heartburn means you are more likely to give birth to a baby with a full head of hair
  • The longest pregnancy on record was reportedly 375 days long (instead of 280)
  • Holly, Lexi and Leah are the baby girl names that fell most in popularity last year
  • Because blood flow increases during pregnancy, occasional nosebleeds and bleeding gums are common

What to think about in week 13

You and your partner might be planning to treat yourselves to one last couple's holiday before your baby arrives – and now could be the time to get thinking about destinations, vaccinations and flying restrictions! Most airlines will have their own rules and regs regarding how late pregnant women can fly, and restrictions on long haul after a certain number of weeks. 

It's good to bear temperatures in mind too if you are booking a last-hurrah break – you might not enjoy hot and sweaty tourist resorts with a burgeoning bump in quite in the same way as you did in your pre-pregnant state! 

Watch our videos below:

Video 1: Pregnancy exercise from Nuffield Health
Video 2: How to eat and drink healthily in pregnancy

At a glance

  • Your little one is now about the size of an egg
  • Kidneys begin to function
  • Time to start looking for a capsule maternity wardrobe
Your little one is growing in leaps and bounds

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