
A 2004 study showed that there is a chance of 1 multiple births in every 67 pregnancies. When it comes to multiple births, twin seems to be the easiest, but is it?
Well, the world of twins is undoubtedly fascinating, and it is understandable if you feel desperate to have twins. But do you know the complications related to twin pregnancies or even the type of twin pregnancies? Let us explain it to you!

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There are three main different types of twins:
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Diamniotic dichorionic pregnancy means that both the babies are growing in separate sacs.
Some twins develop when two different sperms fertilize the two different eggs. This results in the formation of two separate zygotes in the womb where each of the zygotes only shares about 50% of the genes. This makes them genetically like a sibling.

Now, each of the foetus lies within its membranes called the chorion and amnion (they have their own chorionic and amniotic sacs). They are termed as dichorionic diamniotic twins.
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It is the outermost layer of the fluid-filled amniotic sac which surrounds the growing fetus inside the womb. When two foet uses are growing separately in separate sacs, it is surrounded by two separate chorions, and they are termed as dichorionic. The prefix "di" is used to indicate two.
All dizygotic or fraternal twins are dichorionic in nature whereas some monozygotic (identical) twins can be dichorionic at times.

When it comes to the placenta, the dichorionic twins have two individual placentas, but sometimes the placentas are seen to fuse. The placenta is an organ through which the blood from the mother passes to the baby for supplying nutrients.
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Dichorionic twins are also defined as diamniotic twins since each of them have amniotic sac as its outer membrane. That is why dichorionic twins are described as dichorionic-diamniotic twins.
When it comes to twins and triplets the health risks for twins and triplets are greatly more when compared to singletons. This is because multiples have a greater chance of malformations and malnutrition which results in premature birth, underweight child, and early and late miscarriage risks. That is why you should have an excellent medical team around you to guide and support you during your incredible journey.
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Yes, dichorionic diamniotic (di-di) twins can be identical. When a fertilised egg splits into two embryos within the first four days of conception, it can result in di-di twins. In this, each embryo will develop its own placenta and amniotic sac, but since it started from a single zygote, it will be identical twins.
Yes, natural birth in the case of di-di twins is possible. If the first baby is in a head down position and there are no known complications in pregnancy or as labour progresses, a normal vaginal delivery is possible. Despite the twins being in a position for a normal delivery, the doctor may opt for a C-section depending on the mother’s health.
In most dichorionic diamniotic twins, the delivery is mostly planned between weeks 37 and 38. The exact timing will be decided based on various factors, like the development of the babies. Mother’s clinical condition, fetal health, and presentation.
DCDA – Dichorionic Diamniotic twins are formed when the fertilised egg (zygote) splits into two within the first four days of conception. Each zygote will develop into an embryo with its own placenta and amniotic fluid sac. In the case of fraternal twins, two eggs are fertilised by two different sperm. This can happen when the woman releases 2 eggs in her cycle.