Identical twins

[lesliesara63]

OK I've read so many things in the last few weeks that now I can't remember anything. Two of our triplets are in one sac with a dividing membrane and likely two placentas (not 100%). Does this make them identical? The third baby is in  a separate sac.

[hergrace]

If they share anything (other than a fused placenta, which sometimes looks like a shared placenta), they must be identical.  If they do not share anything, they might be identical.  So, it sounds like you have an identical pair and one unknown.

HTH

[lesliesara63]

THanks - that is what I thought. So God gets credit for that baby that was hiding, not a follicle we thought was too small to fertilize:)

[hergrace]

Glad to help.

[~Adorkable~]

yeah if they are in one sac with a dividing membrane then that means they share a out chorion sac and each have there own inner anionic sac, that would make them Monochorionic-Diamniotic or mono/di twins (these are always identical), with the 3rd being a Dichorionic-Diamniotic or di/di twin to them (with this type there is a small chance of being also identical and having just split earlier, time will tell, usually this one would be fraternal), or triplet a guess in not sure how the twin or triplet term gets used in mixed grouping like that.

 yeah before i researched my twins, i never even knew babies has two sacs!

one piece of advice, i would have them look really closely at everything and really pin down which they are as early as possible, it starts getting harder to tell later on and what form they are can lead doctors to treat them differently and worry about different thing during pregnancy and birth, so knowing for sure can often save you from extra unneeded fussing

the wikipedia article on twins is actually really good in laying it out really straight forward.  http://en.wikipedia.org/wiki/Twin

anyway, down to what matters, congrats on the babies!!!

[lesliesara63]

I had a quick u/s in my doctors office a week ago. He thought based on the thickness of the membrane that there were two placentas, but they are right next to each other. I go for a full u/s tomorrow and hopefully that is the case. I just find it so bizarre that we are having triplets. After struggling so much to conceive and having three m/c's it just seems so impossible that three babies could implant and develop.