Baby Development

See Your Baby Grow, Week by Week – With Confidence and Care

Our baby development scans allow you to track growth, wellbeing, and progress in a calm, supportive environment — giving you reassurance and a beautiful bonding experience at every visit.

3 Weeks – The First Signs of Life

Your baby begins forming the foundations of vital organs, and a tiny heartbeat starts to flicker — the very first rhythm of new life.

4 Weeks – Tiny Foundations Take Shape

Your baby’s organs begin to form — the liver, kidneys, lungs, and muscles start developing, while the delicate spine takes shape as the neural tube closes.

5 Weeks – Growing Little Features

Your baby’s brain and organs continue to form, while the umbilical cord appears to provide nourishment. Tiny details like the upper lip, nose, and the first hints of arms, legs, and nails begin to take shape.

6 Weeks – Taking Shape

Your baby’s brain develops rapidly as the placenta begins to form. Tiny facial muscles start to appear, along with the first delicate outlines of little hands and fingers.

7 Weeks – Little Movements Begin

Your baby’s circulation connects with the placenta, supporting steady growth. Tiny arms start to form, and the first signs of eyes and ears begin to take shape.

8 Weeks – Perfecting the Details

Your baby’s major organs, including the heart, lungs, brain, and kidneys, are now formed. Tiny facial features — eyes, nose, ears, and lips — come together, giving your little one a more defined face.

14 Weeks – Growing Stronger Every Day

Your baby’s bones are becoming stronger, and the first soft strands of hair begin to appear. The reproductive organs continue to develop - with the prostate forming in boys and the ovaries moving into place in girls. 🌸

18 Weeks – Awakening to the World

Your baby’s immune system is developing, and gentle sleep–wake patterns start to appear. They can now hear sounds and respond to the world around them — a beautiful sign of growing awareness.

24 Weeks – Full of Character

Your baby’s bone marrow and spleen begin producing blood cells, and tiny taste buds start to develop. Their face is now beautifully formed — complete with delicate eyelashes and eyebrows visible on scans.

32 Weeks – Getting Ready for the World

Your baby’s skin becomes smoother and softer as little hands and feet grow plumper. The lungs mature with surfactant production, and the endocrine system begins releasing important hormones — all preparing your baby for life outside the womb.

36 Weeks – Almost Ready to Meet You

Your baby continues to gain weight as soft layers of fat develop beneath the skin. The skull bones stay flexible with tiny gaps (fontanelles) to aid a safe birth — a sure sign your little one is nearly ready to arrive.

39 Weeks – Ready for the Big Arrival

Your baby’s brain is now fully developed, and their eyes can focus at about 30cm — the perfect distance to see your face. The fine fuzz has disappeared, replaced by soft hair on their head. Your little one is ready to meet you.

EXCELLENT
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Based on 54 reviews
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Nicole Brown profile picture
Nicole Brown
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Been to Numi twice and both times they’ve made it special and such a calming experience. Will definitely be back when I’m further along :)
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Stacey Hewitt profile picture
Stacey Hewitt
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Second time coming here very friendly and informative, staff are lovely.
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Emily Hudson profile picture
Emily Hudson
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Really welcoming and cosy feel, the atmosphere really settled nerves. Great care whilst receiving the ultrasound and great information provided.
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Jack Genney profile picture
Jack Genney
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Extremely professional and an exceptional service!
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Aaron jones profile picture
Aaron jones
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5***** couldn't do enough for my wife. Would highly recommend. The lady went out of her way to accommodate for my wife. Couldn't recommend this place enough. Thanks for such a lovely experience x
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Sophie Rose Gowing profile picture
Sophie Rose Gowing
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Went to my friends gender reveal and what a lovely experience we had, the attention and care was amazing! Highly recommend to family and friends thank you 🩵🩷
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Bobbie Mciver profile picture
Bobbie Mciver
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Went for my gender scan at 15+1, baby had its legs crossed, went for a few walks but they did everything to get the gender for me and they got it in the end, baby girl on her way. Thankyou so much, will definitely be returning for an 8k scan. Thankyou x
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Con Field profile picture
Con Field
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Enjoyed second time around my boy finally played ball thank u so much for the scan 100 percent recommend the numi scan first time iv ever been thank u again
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Gabija Gl profile picture
Gabija Gl
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Amazing experience, me and my partner had a warm welcome. Also not to mention i had problems making an appointment online and ive lost on all slot times but this place made an extra slot for us to attend! Cant recommend enough! Amazing staff!

Frequently Asked Questions

Everything You Need to Know Before Your Scan.

We provide early pregnancy scans, gender reveal scans, 4D bonding scans, growth and wellbeing scans, NIPT, SneakPeek, and blood tests. Each visit includes a detailed report and keepsake images.
Yes. Scans are carried out by experienced sonographers using diagnostic ultrasound. We only scan clients aged 16 and over. If you are 16 or 17, you must be at least 9 weeks pregnant, bring photo ID, and attend with a parent or legal guardian.
Yes. Children of all ages are welcome as guests. The clinic is set up so your family can share the appointment with you.
A deposit is taken when you book so your time is held. The remaining balance is paid on the day of your scan.
Yes. Bundle packages cover more than one scan through your pregnancy and cost less than booking each visit on its own. See all packages for the current list.
Book online on our appointment page, or call us on 01472 902509. Same-day appointments are often available.
Book one to two weeks ahead if you want a weekend or evening slot. We are open Monday to Friday, 10am–9pm, Saturday 9am–4pm, and Sunday 10am–4pm.
Yes. Please give at least 24–48 hours’ notice. Full details are in our terms and conditions.