How do you know if you have fraternals?

I am no expert, so maybe I just haven't come across the info yet.

How do you know if you have fraternal twins while in utero if they are both the same gender?

Each of mine have their own sacs (we saw that at 6w). God willing, both are still there. I am assuming they are because not only have I either had dry heaves or thrown up multiple times a day, but Zofran isn't working anymore and it's getting worse. I go in for another appt on the 19th and am PRAYING she will give me an U/S to make sure both are still beating.

I know if they are in the same sac, you have identical twins, right? Or if they share a placenta (that isn't fused). But is there any way to know if they are fraternal while still in utero and the same gender?

 

I had an ultrasound at 5wks and another at 6wks to check for heartbeats. The doctor and technician told me at the 6wk u/s that I had 2 cysts on my ovary so that I had dropped 2 eggs.

 

I have one sac and one placenta - momo twins, so I have not looked into this. I am now 19 weeks pregnant and I have had 13 u/s. I am kind-of sick of them looking for the membrane. I have now had 2 LEVEL II u/s as well. I am pretty sure you cannot really verify frat or ID until after birth with the testing on the placenta...or DNA testing. I have a friend who thought she had fraternal girls, but 6 weeks after they were born had them tested and they were ID.

 

Mine each had their own sac and their own placenta and a very thick dividing membrane at our 9 week u/s. We "assumed" they were frats. After birth, first of all, they looked NOTHING alike and they tested their blood after they were born...they each have a different blood typ.

 

There is no way to be 100% certain while in utero without some kind of genetic testing.

Now, I know I ovulated two eggs because I saw the follicles on the ultrasound the day I triggered ovulation, so I am assuming my guys are frat--but it doesn't necessarily mean that they are!!

 

I assume mine are frat because we transferred two day 5 blastocysts and there are two sacs and two placentas.

 

Yep.. your best bet is to wait till birth for the blood types and go from there.. ours were different so we knew it was frats for us!

 

our have different blood types (found out after birth)
FRATS here!!!

 

if ur babies are in seperate sacs and have thier own placenta then they are fraternal, but if your placenta fused together and it looks like there is only one placenta there is no way to tell until they are born and you do a dna test. Identicals have one placenta and two sacs mono/di or they have one sac and one placenta mono/mono(momo twins) fraternals are di/di usually. a fused placenta is really the only hard one because depending on when it fused they could be ID or Frat. hope u get ur U/s and that the babies are doing good ;-)

 

I am pg with identical girls, they are each in their own sac but only one placenta. They can still be identical though if there are 2 placentas. Only one sac is very dangerous. Good luck!

 

QUOTE(Babies On The Way @ Dec 16 2007, 07:04 PM) [snapback]536647[/snapback]
if ur babies are in seperate sacs and have thier own placenta then they are fraternal, but if your placenta fused together and it looks like there is only one placenta there is no way to tell until they are born and you do a dna test. Identicals have one placenta and two sacs mono/di or they have one sac and one placenta mono/mono(momo twins) fraternals are di/di usually. a fused placenta is really the only hard one because depending on when it fused they could be ID or Frat. hope u get ur U/s and that the babies are doing good ;-)

ID's can also be in separate sacs with their own placentas.

 

QUOTE(Babies On The Way @ Dec 16 2007, 07:04 PM) [snapback]536647[/snapback]
if ur babies are in seperate sacs and have thier own placenta then they are fraternal, but if your placenta fused together and it looks like there is only one placenta there is no way to tell until they are born and you do a dna test. Identicals have one placenta and two sacs mono/di or they have one sac and one placenta mono/mono(momo twins) fraternals are di/di usually. a fused placenta is really the only hard one because depending on when it fused they could be ID or Frat. hope u get ur U/s and that the babies are doing good ;-)



You can have two placentas and still be identical!!!!

 

QUOTE
if ur babies are in seperate sacs and have thier own placenta then they are fraternal, but if your placenta fused together and it looks like there is only one placenta there is no way to tell until they are born and you do a dna test. Identicals have one placenta and two sacs mono/di or they have one sac and one placenta mono/mono(momo twins) fraternals are di/di usually. a fused placenta is really the only hard one because depending on when it fused they could be ID or Frat. hope u get ur U/s and that the babies are doing good


I have to say that is not true. Many Dr's used to say that, and many still do. However, DNA has now proven that is not true. Twins can separate very early after conception and have separate sacs and placentas and still be ID. We were told ours were frats because they did not share a thing in utero, (di/di) only to find out through DNA and by the fact that they look exactly the same that they are ID. After they were born I started to do research and realized the Dr. were wrong and they had a 20% chance of being ID being di/di.

 

Yes, it's true, there's no way of knowing unless you have DNA testing!! There's a pretty good percentage of twins with their own sac and placenta who are identical, all depending on when they split (I think 20-30%). Of course if their blood type is different you won't have to go to that great length. I have a friend whose doctor said that based on looking at the placentas he thought they were fraternal, but they were ID.

 

I'd say is they are the same sex and look alike after they are born, same hair color and blood type, then the only true way to tell is get a DNA test done to confirm it. That's what I had to do and my twins are Identical.