Hi im zen, 32 years old, weighing 152 pounds and 5-foot-5 inches tall. I am carrying my first baby and he is already 19 weeks now. I just had my ultrasound but the doctor have yet to discuss the results since I underwent ultrasound after my monthly check up. So i would be meeting my doctor next month. My ultrasound (which conducted on my 17 weeks) found out that I would be having a baby boy, I want to know whats the meaning of the doctors impression claiming: MALE, presently at cephalic presentation, with an estimated weight of 247grams (0 LB 9 OZ). Placenta, anterior, low-lying, Grade I maturity. Suggest follow up study?