No, the dating scan is primarily used to determine the gestational age, viability, and number of fetuses. Gender determination is typically performed later, during the 20-week anatomy scan or through specialized tests.

The dating scan is highly accurate in predicting the due date, especially if performed between 8 and 12 weeks of pregnancy. The margin of error is usually within 5-7 days, but it can vary depending on the exact timing of the scan and fetal development.

A dating scan can typically be performed from 6 weeks of pregnancy. However, for better clarity and more accurate results, it is generally recommended to have it between 8 to 12 weeks.

No, the dating scan is a painless procedure. Some pressure may be applied during the transabdominal scan, but it should not cause discomfort. If a transvaginal ultrasound is necessary, it may feel a little uncomfortable but is generally not painful.