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Antenatal care for women expecting twins or more

Tamba's Preparing for Parenthood Guide - Register to downloadAs with all mothers-to-be, a multiple pregnancy is divided into three phases of about three months each, known as the first, second and third trimesters. 

The first ultrasound scan usually takes place at the end of the first trimester, at around 10-14 weeks’ gestation. This will confirm the number of foetuses, how many placentas there are and whether they are in separate or shared amniotic sacs. If the babies share an amniotic sac they are certain to be identical. But sometimes identical twins have one each, so the presence of two amniotic sacs does not rule out your babies being identical.

The sonographer will also check to see if the babies share a placenta (monochorionic), which can lead to complications. Sometimes this is hard to see, but if it appears to be the case then the health team will want to scan the babies regularly to make sure they continue growing well.

All pregnant mothers are given an anomaly scan at 18-22 weeks to check the babies are developing normally, but mothers of multiples will also have scans during the last two months of pregnancy to check on their babies’ growth and positioning. The timing and frequency of these scans varies according to the number of babies, their chorionicity (whether they share a placenta), hospital procedure, and whether anything else needs monitoring.

With twins, the health team will check the position of the leading baby at about 34 weeks to decide how they should be delivered.

Below Specialist Midwife for Multiples, Sandra Bosman, answers some FAQ about what to expect when you're expecting multiples. Log in or register today to see the whole playlist, which includes information about care plans and what tests to expect. 


It's worth taking a look at the 'Good care from nurses and midwives code'. The code outlines what good care looks like and what you should expect when receiving care.

Can I have screening tests?

The sonographer can take measurements during the routine scan at 10-14 weeks to assess the babies’ chances of having Down’s syndrome.

You will be offered some screening tests during pregnancy to try to find any health problems that could affect you or your babies, such as, infectious diseases, Edwards', Down's or Patau's syndrome, or physical abnormalities.

The tests can help you make choices about care or treatment during your pregnancy or after your babies are born.

If you sign up for our FREE Tamba Pregnancy Countdown Tool the combined test and screening is discussed in week 10. Don't worry of you are past week 10 as this will still be available for you to read after you have signed up.

You can also find out  more information on screening on the NHS website

It is important to read up on screening and write down any questions you may have so you can ask your consultant and midwife. This will help you make decisions that work best for you and your family.

Whether your babies are identical or non-identical and whether they share a placenta, is very important in understanding your options.

Making that decision can be difficult. You may like to speak with your hospital screening midwife or ARC antenatal results and choices.

More information can be found on The Healthy Multiple Pregnancy guide on the Tamba website.

There are also non-invasive DNA tests for Downs Syndrome often branded as the Harmony (or NIFTY) test available from 10 weeks. These are mainly available in the private sector as they are not yet widely available in NHS hospitals although some are participating in research. Details of the units participating in this research are available here. 


Antenatal care

Ask if the hospital has a midwife or doctor who specialises in multiple births and try to arrange your antenatal appointments with them.

You may have a list of questions. Don’t be rushed through the system: if you need extra time to work through that list, ask for it. You may want to know, for example, what the hospital procedure is for multiple births and what special arrangements there are for antenatal care in multiple pregnancies. It may also be useful to find out if the hospital has a midwife who specialises in breastfeeding support for mothers of multiples. Make sure you mention any symptoms you are having, even if you think they are probably normal. The doctor or midwife can put your mind at rest or investigate further if need be.

Two women expecting twins attending a Tamba pregnancy course with their partners

If you are unhappy with your hospital care, ask to speak to another doctor or midwife. All hospitals have a complaints procedure. You can also contact us at Tamba for help and support. Antenatal classes are especially important in multiple pregnancy. As twins or more often arrive a little early, it’s best to ask about and book antenatal classes now to make sure you complete them before the babies arrive – with twins, try to complete the course by the 34th week of pregnancy; for triplets, by the 30th week. Some hospitals have special antenatal classes for multiple pregnancies. Tamba runs antenatal classes solely for multiple mums and dads where you can meet other parents who are expecting twins, triplets or more. Parents who have attended tell us both the classes and the opportunity to share experiences with others in the same boat are enormously helpful.

Tamba regularly conducts research to better understand families’ experiences of pregnancy, birth and the early months. Tamba uses the feedback from the research to campaign for improvements in care for multiple birth families.  Keep an eye on our website and social media for details of our current campaigns.

Follow the links to find out more on finding out you are expecting multiples, looking after yourselfcommon symptoms in multiple pregnancies, complicationspreparing for your babies’ arrivalwork and finance, and birth plans.




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 Preparing for parenthood - A guide for parents expecting twins, triplets or more


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