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First trimester

11 Weeks Pregnant

Nearly through the first trimester

This week your baby is around the size of a lime.

How your baby is developing

  • Your baby is becoming more formed, though still very small.
  • Growth continues steadily as you near the end of the first trimester.

What may be happening in your body

  • You have up to 50% more blood than usual now.
  • You may be feeling very tired at the moment; gentle exercise such as walking could help.
  • Stretching muscles and ligaments can cause stomach pains as your womb grows.

How you may be feeling

  • As these last first-trimester weeks pass, some people start to feel steadier while others stay cautious, and both fit this in-between stage.
  • Waiting for a first scan can bring anticipation and nerves at the same time for some.
  • It can feel odd that so much is changing inside while there is still little to show on the outside.

Worth remembering

There is no rush to feel settled — trimester timelines are averages, not rules.

A closer look

Nearing the end of the first trimester

The placenta is taking over from the yolk sac around now, and that handover can leave you feeling tired and emotional. Stretching muscles and ligaments can cause stomach pains as your womb grows — if it hurts a lot, see your midwife or doctor as soon as possible.

Holding worry before a scan

The weeks before a first scan can feel like a long wait, and it is common to carry some anxiety alongside the excitement. Pregnancy can be a stressful time, especially before that first reassuring look. If worried thoughts start to feel heavy, talking them through with someone you trust can help.

Something you can do this week

There is no rush to plan everything — one step at a time is fine.

What comes next

Week twelve marks the end of the first trimester for many parents.

Professional support

Services ParentSide defines for this stage. Each page explains what the service covers and which professionals are approved to provide it.

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Sources and updates

Sources

Last reviewed:
This content is based on estimated averages and general information; it does not replace medical advice. If you are concerned about yourself or your baby, speak with a qualified healthcare professional.

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