Question by Mommy to Sammy: Question on twin pregnancy. How far along to know if they are identical or fraternal?
Thanks...
Thanks for the first answer. I just found out I am pregnant with twins, and I didn't think to ask the U/S tech if she could tell if they were I or F.
Sarah...good luck with your pregnancy.
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Identical twins can:
- either share an amniotic sac
- have seperate sacs and share a placenta
- are always the same sex
- most the time share the same blood type
Fraternal twins can:
- have seperate sacs
- have seperate placentas
- can be a boy/girl or the same sex
- can share the same blood type or have different blood types
They can sometimes tell with a good ultrasound machine, and after birth they can test the placentas. U can also get dna testing done after birth.