Hello doctor, I am now 23 weeks pregnant and I am hypothyroid for which taking prescribed doses and with it I have hypertension that I got during pregnancy for which taking aldomet twice a day. My question is that as I have hypothyroidism and hypertension so doctor do my ultrasound frequently to see growth of the baby. Once in ev. Month ultrasound is done and sometime they did twice a month. Is it ok to do ultrasound frequently? will not it be a problem for baby's brain development as I have read that frequent ultrasounds affects the baby.