![]() You'll have your first scan at around 11 weeks, which is likely to be when you first discover you're carrying twins.Īt this appointment you'll have some further tests to establish their 'chorionicity'. 'Generally about one-third of multiples are identical, and two-thirds are non-identical.' How will my antenatal appointments differ with twins? However, it's only possible to determine this with genetic test once they're born. Twins not sharing a placenta are usually non-identical although there is a possibility they could be identical (if they're the same sex).If you're having a boy and girl then you'll know that they're non-identical twins.Twins sharing a placenta will usually be identical and therefore be the same sex.This also helps to work out the chances of them being identical or non-identical. Once they know what's called their 'chorionicity' they can map out your antenatal care in the best possible way for your babies. Your midwife and sonographer will want to pinpoint (from a scan) which yours are by looking closely at whether the babies share a placenta or have their own. monochorionic monoamniotic (MCMA) twins – share both the inner and outer membranes.monochorionic diamniotic (MCDA) twins – share a single placenta with a single outer membrane and two inner membranes.dichorionic diamniotic (DCDA) twins – each has their own separate placenta with its own separate inner membrane (amnion) and outer membrane (chorion). ![]() The NHS explains the three different types of twins as follows: Your midwife or specialist will be able to explain this to you at your appointments but in a nutshell it comes down to whether two eggs were fertilised around the same time or whether one egg was fertilised and then split into two (babies). We all know that twins means two babies BUT there are actually three different types of twins. You'll feel big and uncomfortable in your third trimester but remember that you'll most likely deliver the babies at 37 weeks, so you won't be pregnant for as long as you would be with one baby. You'll gain more weight than if you were carrying one baby but there's no definitive answer as to how much you'll put on. This is totally understandable and it's important to talk to your midwife, partner and other support groups to help ease any concerns.Ĭhatting to other mums in our forum can be really helpful, too. You may also feel particularly anxious during your pregnancy. However, if you've not been pregnant before this will just be normal to you as you've nothing to compare it to. 'A multiple pregnancy may be suspected from the size of the abdomen (being large for dates) or severe morning sickness, and is usually confirmed by an ultrasound scan.' Will I feel different?Īs above, you may feel particularly large during your pregnancy or more sick. Īlthough you may suspect you're carrying twins, the only way to find out for sure will be at your first scan. Perhaps (non-identical) twins run in your family or you've had IVF treatment (which increases your chance of having twins). The good news is that there's tons of help, advice and support out there these days for mums expecting twins. Those pesky pregnancy hormones won't help matters, either. Whether you're excited, petrified, incredibly anxious (or all three), it's perfectly natural to have mixed emotions. You may have an inkling that you're expecting twins or perhaps you already know you are (and can't quite believe it) – either way, HUGE congratulations! All our articles and reviews are written independently by the Netmums editorial team. This page contains affiliate links, which means we may earn a small amount of money if a reader clicks through and makes a purchase. Having one baby can be daunting enough – so what happens when you're expecting two at the same time? From how you might be feeling to what to expect from your antenatal care, here's what to expect when you're pregnant with twins.
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