Your baby is now officially an embryo and is about the size of a poppy seed.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/4-weeks-pregnant/ for more information.
Local Maternity and Neonatal System
View navigation
After the birth
The Healthier Together website provides parents, carers, pregnant women and birthing people, babies, children and young people across North East Lincolnshire, North Lincolnshire, the East Riding, Hull, North Yorkshire, and York with consistent and high-quality advice from local health professionals.
You'll find clear information on common childhood illnesses, including advice on what 'red-flag' signs to look out for, where to seek help if required and how long your child's symptoms are likely to last.
Popular topics include:
Your baby is now officially an embryo and is about the size of a poppy seed.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/4-weeks-pregnant/ for more information.
Your baby is now the size of a kidney bean and weighs 1g.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/8-weeks-pregnant/ for more information.
Welcome to the second trimester!
Your baby is about the size of a small lime and weighs approximately 14g.
You have hopefully seen your midwife for your 'booking in' appointment, if you have not yet seen a midwife please make an appointment quickly, so you can have all of your choices about screening tests explained and offered to you.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/12-weeks-pregnant/ for more information. You can also link to the 'Pregnancy Journey' area here.
Your baby is about the size of an avocado and weighs approximately 100g.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/16-weeks-pregnant/ for more information.
Your baby has grown in length and is now the length of a small banana and weighs approximately 300g. Around this time you will be offered your '20 week' scan, also known as the 'anatomy' or 'anomaly' scan.Click here for more information about screening.
This is a also a good time to talk and sing to your bump as your baby can now hear sounds. This is great way for you and your partner/family to bond with your baby.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/20-weeks-pregnant/ for more information.
Your baby has grown again to the approximate length of an ear of sweetcorn and weighs about 600g.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/24-weeks-pregnant/ for more information.
Welcome to the third trimester!
Your baby is now approximately the weight of an aubergine; about 1kg and approximately 37cm in length.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/28-weeks-pregnant/ for more information.
Your baby now weighs approximately the same as a coconut; around 1.5kg.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/32-weeks-pregnant/ for more information.
Your baby is now around the same size as a lettuce, approximately 47cm long and weighs around 2.6kg.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/36-weeks-pregnant/ for more information.
Your baby is now the weight of a small watermelon which is approximately 3.3kg and around 50cm in length.
Please visit www.nhs.uk/conditions/pregnancy-and-baby/40-weeks-pregnant/ for more information.