What are my chances of having a multiple pregnancy?

Up to half of all multiple pregnancies result from fertility treatment and around a quarter of all twins and most triplets are born following IVF treatment.

What are my chances of having a multiple pregnancy? Most forms of fertility treatment increase the risk of multiple pregnancy. Understanding the risks involved in your particular treatment and knowing how your risk can be minimised are vital in ensuring you receive the treatment that is right for you.

Fertility drugs

Drugs given to increase your chances of becoming pregnant fall into two groups: hormone treatment, such as gonadotrophins; and anti-oestrogens, such as clomifene citrate (Clomid). Because they increase your chance of becoming pregnant, they also increase your chances of multiple pregnancy.
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IVF

At present, receiving IVF treatment can increase your risk of a multiple pregnancy by as much as 11 times compared with natural conception. However, you can minimise your risk while maintaining your chances of becoming pregnant.
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IUI

Stimulated IUI (intrauterine insemination), where fertility drugs are used can increase your chance of multiple pregnancy by over 20%, compared with natural conception.
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Multiple birth factsheet for patients

Are you going through fertility treatment and want to know more about the risks of multiple births?

Infertility Network UK (INUK) has published a factsheet that addresses a number of common concerns and questions that fertility treatment patients have.

Support group

Support groups

If you are concerned about any issues connected with multiple pregnancy and birth, you can get help and advice from a number of sources.

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