A mono-di (or mo-di) twin pregnancy is one where twins share a placenta and each have their own amniotic sac. Mono-di is short for monochorionic diamniotic, meaning one chorion, two amnions.

Little Mix alum Jesy Nelson, who is expecting identical twins with boyfriend Zion Foster, got emotional while discussing her pregnancy complications in a new video.

DEVASTATED Jesy Nelson has broken down in tears as she revealed she needs an emergency procedure to help her unborn twins survive. Taking to Instagram this afternoon, Jesy and her partner, Zion ...

The types of twins we’re having are monochorionic diamniotic [MCDA] twins and with that, normally, most twins will have two placentas that they feed off of. When you have monochorionic ...

alluding to twins in their caption. Then on Wednesday, March 5, Nelson revealed that the unborn babies are monochorionic, diamniotic (MCDA) — meaning each has its own amniotic sac but they share ...

"Unfortunately, there are complications that come with having identical twins." She explained that she is carrying Monochorionic Diamniotic Twins, which means that the fetuses have their own ...

Without medical intervention, TTTS can be fatal for both twins, with survival odds at just 50/50. Monochorionic twins, who share a placenta but have separate amniotic sacs, face additional risks ...

Article continues below During Leila's pregnancy with triplets, she was told she had Monochorionic ... had his own placenta and sac. Twins sharing a placenta are at risk of restricting fetal ...

Nelson, 33, went on to explain that the twins are monochorionic, diamniotic (MCDA), which is when each baby has its own amniotic sac, but they share a single placenta, per Columbia University.