Twin Pregnancy :
Twin pregnancy is a condition where there are two fetuses in the mothers womb instead of one during the pregnancy. This typically happens due to fertilization of more than one egg or during division of embryo. Depending on this they can be non- identical or identical twins respectively.
Twin pregnancy is likely to occur in individuals who are of elderly age I.e., 35 years, maternal history of twin pregnancy, fertility treatment, obesity or previous twin pregnancies. They can be identified by having more HCG hormone and alpha fetoprotein in the blood and is confirmed by prenatal ultrasound.