i m in 18 weeks 6 days of pregnancy, my doctor told that I should do sonography in nxt 5 days.... should I?? or i have to wait for 6 mnth ??

A. The 19 week scan is the main ultrasound of your pregnancy. It is the best time for a universal detailed check of the fetus. This is when it is already large enough to examine in detail, and equally developed enough to be using its structures a lot. This gives extra information on its development.