Pregnancy is a very happy thing for many families. Many pregnant women hope to have twin babies, so they are both curious and nervous when undergoing examinations. When facing the results of a single pregnancy examination, it is inevitable to feel a little disappointed. So, can a single pregnancy become a twin?
After pregnancy, a single child may become a twin. Because there are two types of twins: fraternal twins and monozygotic twins. During early ultrasound examination of identical twins, although the fertilized egg may divide into two embryos, one large and one small may occur. It is very likely to be diagnosed as a singleton due to lack of visibility during examination, but as it grows and develops, the result of a singleton becoming a twin may occur.
The shape of the gestational sac in twin pregnancies is generally concave in the middle, gourd shaped or pea shaped in the early stages of pregnancy. Due to the small size of the fetus, the quantity cannot be seen. With the increase of pregnancy days, after the formation of fetal buds, both fetal hearts can be seen in the twin. Go for another check-up in three months to determine if they are twins.
Pregnant women with twin pregnancies not only have more severe early pregnancy symptoms, but also have higher progesterone and HCG values during early pregnancy examinations compared to those with single pregnancies. In addition, their abdomen will be larger and grow more rapidly in the early stages, even exceeding the normal size of the gestational month. The likelihood of lower limb edema, varicose veins, and gestational hypertension in late pregnancy is significantly higher than in singleton pregnancies.
