There are two main techniques for obtaining the EDD. Both are common medical practice, and both are used in this Estimated Date of Delivery calculator. In essence, the first one is based on the date of your Last Menstrual Period, and the second one relies on the results of an Ultrasound (Ultrasonography, US) examination. With the EDD calculator, you can compare these two estimations and check if your baby is healthy.
According to a study conducted in China on 45,518 pregnant women, there is a link between indoor pollution caused by