# 36 Weeks Pregnant: Baby Size, Symptoms & What to Expect | Clever Mum

> 36 weeks pregnant — your baby is the size of a romaine lettuce. What's developing, what you might feel, and what to focus on this week.

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Third trimester

 
#  36 weeks pregnant

 

Your baby is about the size of a romaine lettuce 

   [ CP ](/authors/parenting-desk/)  
 By [ Clever Mum Parenting ](/authors/parenting-desk/) · Parenting guides 

 
 Published 11 July 2026  

      
 
Quick answer — What happens at 36 weeks pregnant? 

 
At 36 weeks pregnant, your baby is about the size of a romaine lettuce, roughly 47.4cm and around 2600g. The baby may "engage" — drop down into the pelvis ready for birth — though many don't until labour, especially in later pregnancies.

    
Who should skip this

 
Skip this page if you need personal medical advice — it is general NHS-aligned information, not a substitute for your midwife. If your baby's movements slow or change, call your maternity unit, not a website.

    
## How big is the baby at 36 weeks pregnant?

 
At 36 weeks pregnant, your baby is about the size of a romaine lettuce, roughly 47.4cm and around 2600g. The baby may "engage" — drop down into the pelvis ready for birth — though many don't until labour, especially in later pregnancies. They're shedding most of the lanugo and vernix. These are typical averages — your midwife's measurements are the ones that matter for your pregnancy.

 
## What might you feel at 36 weeks?

 
Most people at 36 weeks notice some mix of the symptoms below — and plenty notice none of them. Breathing may feel easier once the baby engages, but weeing becomes even more frequent. Braxton Hicks can be strong. You're considered full term from next week. None of this is a diagnosis; contact your midwife if something worries you.

  
### Common symptoms this week

 
 * Easier breathing once the baby engages ("lightening")
* Very frequent weeing
* Strong practice tightenings
 
 

Symptom lists are typical, never exhaustive — and having none of them is normal too.

  
## What should you do at 36 weeks pregnant?

 
The useful job this week is practical, not medical. Have your hospital bag by the door and your birth plan discussed with your midwife. Know your maternity unit's "when to call" number by heart. Pair it with the NHS week-by-week guide if you want a second description of the same stage.

    
### Week 36 checklist

 
 * Attend your 36-week appointment — the baby's position is checked
* Have the hospital bag by the door and the car seat fitted
* Agree your birth plan with your midwife and know the triage number by heart
 
   
## What else is useful at 36 weeks?

 

Use the week page for size and symptoms; use the guides below for the decisions that
                actually sit in this window — pay, packing, car seats, labour signs.

 
 *  [Due date calculator](/tools/due-date-calculator/) 
*  [Trimester to-do list](/pregnancy/pregnancy-to-do-list-by-trimester/) 
*  [Maternity leave and pay](/pregnancy/maternity-leave-and-pay-uk/) 
*  [Best infant car seats](/best/best-car-seats-uk/) 
*  [Hospital bag checklist](/pregnancy/hospital-bag-checklist-uk/) 
*  [Signs of labour](/pregnancy/signs-of-labour-what-to-expect/) 
 
    
## 36 weeks pregnant: common questions

    What does it mean when the baby's head is engaged?   
 The head has dropped down into the pelvis ready for birth — recorded in your notes in fifths (e.g. "3/5 palpable"). First babies often engage from 36 weeks; second and later babies may not engage until labour itself. Engagement doesn't predict when labour will start. 

   How big is my baby at 36 weeks pregnant?   
 At 36 weeks, your baby is approximately the size of a romaine lettuce, about 47.4cm and around 2600g. These are approximate averages — every baby grows at its own pace. 

   What's happening at 36 weeks pregnant?   
 The baby may "engage" — drop down into the pelvis ready for birth — though many don't until labour, especially in later pregnancies. They're shedding most of the lanugo and vernix. For you: breathing may feel easier once the baby engages, but weeing becomes even more frequent. braxton hicks can be strong. you're considered full term from next week. 

   Which trimester is 36 weeks?   
 36 weeks pregnant is in the third trimester. The first trimester runs to the end of week 12, the second from weeks 13 to 26, and the third from week 27 to birth. 

     
## 
Sources & further reading

 
 *  [ You and your baby at 4 to 40 weeks pregnant ](https://www.nhs.uk/pregnancy/week-by-week/)  — NHS 
*  [ Your baby's movements ](https://www.nhs.uk/pregnancy/keeping-well/your-babys-movements/)  — NHS 
 
   [← 35 weeks](/pregnancy/week/35/) [All weeks](/pregnancy/week/) [37 weeks →](/pregnancy/week/37/)  

This is general information, not medical advice — every pregnancy is different. For
          anything that worries you, and for all your antenatal care, speak to your midwife or GP.
          If your baby's movements ever slow down or change, contact your maternity unit
          immediately, day or night. Reviewed August 2026.

    
## Week 36 at a glance

   Trimester Third trimester  Baby size romaine lettuce  Approx length ~47.4cm  Approx weight ~2600g  Weeks to go 4 (to 40)     
Work out your dates

 

Not sure how many weeks you are? Our
[due date calculator](/tools/due-date-calculator/)
maps your weeks and trimester dates from your last period.