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First trimester (weeks 0 to 12) - Stomach pain and cramps in pregnancy

Stomach or tummy pains in pregnancy are very common and can happen at any time.

Most of the time, they are nothing to worry about. But sometimes they can be a sign of something more serious.

It is important to know what to look out for in each trimester and when to get help.

Urgent advice: Contact your GP, midwife, maternity unit or hospital urgently if:

  • you have severe stomach pain that won't go away

Weeks 0 to 12

Cramps and period-like pains are very common in early pregnancy. These are usually caused by changes in your hormones and by your growing womb.

Sometimes stomach pains in early pregnancy can be a sign of something more serious such as:

When to get medical help in your first trimester

Non-urgent advice: Contact your GP, midwife, maternity unit or hospital if:

Page last reviewed: 9 March 2026
Next review due: 9 March 2029

This project has received funding from the Government of Ireland’s Sláintecare Integration Fund 2019 under Grant Agreement Number 123.