They each have their own placenta and amniotic sac. Most di-di twins are fraternal, but they can be identical. A first-trimester ultrasound will confirm you're having di-di twins by showing two ...

After the first trimester, your risk of miscarriage drops rapidly: If your doctor sees a healthy fetal heart rate at an early ultrasound — usually done between 7-8 weeks — it's a sign of ...