Your baby at 40 weeks
Your baby is quite squashed now but should still be moving as usual.
Your body at 40 weeks
Practice contractions should be painless. Real contractions tighten your bump and hurt, then ease off as the muscle relaxes.
Only around 1 in 20 babies arrive on their due date, so try not to fixate on it.
Your due date is a guess, not a deadline. Plan something nice for the days after it.
Your to-do list at 40 weeks
- If this is your first baby, you'll have an antenatal appointment this week.
- Call your maternity unit if your contractions are coming every 5 minutes or more often, or if you're worried.
When to call your midwife
Contact your maternity unit straight away, day or night, if your baby's movements slow down, stop or change, if your waters break, if you have bleeding, or if you have a bad headache, vision problems or sudden swelling. Don't wait until the next day.
How big is my baby at 40 weeks pregnant?
At 40 weeks, your baby is about 51.2cm from head to heel.
How many months is 40 weeks pregnant?
40 weeks pregnant is around 9 months, in the third trimester.
What should I do at 40 weeks pregnant?
If this is your first baby, you'll have an antenatal appointment this week.
Keep reading
- Pregnancy week by week: the complete guide
- Due date calculator: when is my baby due?
- Hospital bag checklist: what to pack for you, baby and your birth partner
- Signs of labour: how to tell it is starting, and when to call
This guide is general information based on NHS week-by-week guidance, not medical advice. Every pregnancy is different, and baby sizes are averages. If you're worried about anything, contact your midwife, GP or maternity unit. See the NHS week-by-week guide.
If you’re trying to conceive (TTC), you probably know that there are certain foods and nutrients that become especially important once you’re pregnant. But nutrition plays a vital role even when trying to conceive, much like laying a strong foundation before constructing a house.
Certain nutrients create that foundation by supporting egg and sperm health (yes, nutrition matters for both partners), hormone balance and creating a hospitable environment for a fertilized egg to implant. In fact, studies show that certain nutrients can help increase fertility and improve success rates for both natural conception and fertility treatments.
In other words, nutrition is a key player in the TTC journey, but getting the right nutrients in the right quantities can be tricky. That’s where supplements come in. Just as you’d take a multivitamin to fill in nutritional gaps for optimal health, fertility supplements can give you that extra nutrient boost.
Choosing supplements for your fertility journey
When choosing a supplement to support your fertility journey, look for science-backed, high-quality ingredients. Our editors are careful to select and partner with brands that use ingredients that have been clinically studied to support fertility. Eu Natural® (pronounced you) covers all those bases and more. We love knowing that Eu Natural® products contain zero artificial additives, binders, or fillers and are lab-tested to ensure purity and potency.

When choosing a supplement to support your fertility journey, look for science-backed, high-quality ingredients. Our editors are careful to select and partner with brands that use ingredients that have been clinically studied to support fertility. Eu Natural® (pronounced you) covers all those bases and more. We love knowing that Eu Natural® products contain zero artificial additives, binders, or fillers and are lab-tested to ensure purity and potency.





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