First trimester
11 weeks pregnant
Your baby is about the size of a lime
By Clever Mum Parenting · Parenting guides
How big is the baby at 11 weeks pregnant?
At 11 weeks pregnant, your baby is about the size of a lime, roughly 4.1cm and around 7g. The baby can now open and close their fists and is starting to make breathing-like movements practising for life outside. Bones are beginning to harden. These are typical averages — your midwife's measurements are the ones that matter for your pregnancy.
What might you feel at 11 weeks?
Most people at 11 weeks notice some mix of the symptoms below — and plenty notice none of them. For many, the worst of the nausea starts easing over the next couple of weeks. Your uterus is growing up out of the pelvis. None of this is a diagnosis; contact your midwife if something worries you.
Common symptoms this week
- Nausea starting to ease for some
- Less frequent weeing as the uterus rises
- Increased energy on good days
Symptom lists are typical, never exhaustive — and having none of them is normal too.
What should you do at 11 weeks pregnant?
The useful job this week is practical, not medical. Your dating scan (usually 11–14 weeks) confirms your due date and checks development. You may be offered combined screening at the same appointment. Pair it with the NHS week-by-week guide if you want a second description of the same stage.
Week 11 checklist
- Confirm your dating scan appointment (11–14 weeks)
- Decide whether you want combined screening for Down's, Edwards' and Patau's syndromes — it happens at the same scan
What else is useful at 11 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.
11 weeks pregnant: common questions
What is the nuchal translucency measurement?
Part of combined screening at the 11–14 week scan: the sonographer measures fluid at the back of the baby's neck, which combines with a blood test and your age to estimate the chance of Down's, Edwards' and Patau's syndromes. It's optional, and a higher-chance result only means further tests are offered — not a diagnosis.
How big is my baby at 11 weeks pregnant?
At 11 weeks, your baby is approximately the size of a lime, about 4.1cm and around 7g. These are approximate averages — every baby grows at its own pace.
What's happening at 11 weeks pregnant?
The baby can now open and close their fists and is starting to make breathing-like movements practising for life outside. Bones are beginning to harden. For you: for many, the worst of the nausea starts easing over the next couple of weeks. your uterus is growing up out of the pelvis.
Which trimester is 11 weeks?
11 weeks pregnant is in the first 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
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.