Monozygotic dichorionic-diamniotic pregnancies following single frozen-thawed blastocyst transfer: a retrospective case series | BMC Pregnancy and Childbirth | Full Text
Small Gestational Sac: Sac Size in Early Pregnancy
Two babies - separate sacs
Two sacs, only one embryo visible at 7 weeks. Any chance the other is just hiding? : r/parentsofmultiples