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Trimester 1 · week 11 of 40

11 weeks pregnant

From this stage on, the term fetus is used. Most of the basic structures have already started to form and now enter a long stage of growth and maturation.

Translated from the original Brazilian Portuguese content with the help of artificial intelligence. Read the original in Portuguese

Read about your current week or get ready for what comes next.
Visual size comparison at week 11: a fig
Visual reference: a fig. Not an individual clinical measurement.
Quick read

In 1 minute

  • The fetal period begins.
  • The face takes on more defined proportions.
  • Movements are happening, even if they can't be felt yet.
Fetal development

How your baby is doing this week

The head is still large compared with the body, but the neck, limbs and face become progressively more defined. Cartilage starts moving toward ossification. Spontaneous movements may occur, although they are still too small for the pregnant woman to notice.

3D artistic representation of fetal development at week 11
Artistic 3D representation. This is not an ultrasound and does not represent your baby's individual development.
Body and routine

What may change in your body

For some people, nausea starts to show signs of easing; for others, it doesn't. Fatigue, constipation and appetite changes may continue. The bump may be starting to show, especially after previous pregnancies or in multiple pregnancies.

Possible steps

Care for this week

  1. If your appetite is coming back, focus on variety and food safety rather than 'eating for two'.

  2. Stay hydrated and keep up activity that suits your condition.

  3. Bring questions about first-trimester screening to your appointment.

Prenatal care focus

  • Between 11 and 14 weeks there is usually an important window for the first-trimester ultrasound assessment, depending on indication and availability.
Twin pregnancy

If you're expecting twins

Between 11 and 14 weeks is a particularly useful time to confirm chorionicity and amnionicity in twins.

Support network

For those by your side

Going along to the ultrasound, if the pregnant woman wants you there, can be a concrete way to take part.

Common questions

Questions for this week

Can I feel movement yet?

Usually not. The movements are there, but they're usually felt later on.

Is it bad if symptoms are easing?

Not necessarily. The intensity of symptoms can change naturally; worrying signs should be evaluated in their clinical context.

When to seek care

  • Vaginal bleeding during pregnancy should be reported to your care team; how heavy it is, pain and gestational age change how urgent it is.
  • Severe, worsening or persistent abdominal pain deserves evaluation.
  • Fever, fainting, significant shortness of breath, chest pain or feeling very unwell need medical care.

In an emergency, go to the urgent care service in your area. This content does not replace a professional assessment.

Next · week 12

The next chapter

In week 12, reflexes and movements become more organized and the first trimester nears its end.

See week 12

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Sources and transparency

Nilu editorial content, written from the official sources above. Individual clinical review of each week is in progress — this text is for information and does not replace your prenatal care.