The main prenatal check to think about is diagnosing a twin pregnancy. Exploration suggests that as many as forty% of twin pregnancies usually are not diagnosed till the 13th 7 days of pregnancy. An ultrasound can figure out if twin infants are equivalent or fraternal. This is named heteropaternal superfecundation https://bookmarkboom.com/story20232944/the-2-minute-rule-for-twin-horizon