The Doppler ultrasound can produce higher resolve quality in the ultrasound picture.This increase in quality can assure the physician if there is really a need to preform a caesarean section.
Around 6-8 weeks (middle of 2nd month). But you can get it earlier if you feel the need. After the first ultrasound you should get on at least twice a trimester.
The word comes from the name Caesar. It was thought that the first Caesar had been cut from his mother's womb, and that the name Caesar was derived from the verb caedo, to cut. Caesarean section has...