The primary prenatal exam to contemplate is diagnosing a twin pregnancy. Exploration indicates that up to 40% of twin pregnancies are not diagnosed right up until the 13th 7 days of pregnancy. An ultrasound can identify if twin babies are similar or fraternal. This is called heteropaternal superfecundation — a https://myfirstbookmark.com/story20277567/fascination-about-hcbs-102