The last time i went to the doctor which was April 16th I was told i was 20wks. I weighed 145 before pregancy and now told on that appt. day i weighed 162. I was given a ultrasound and the baby weighed 1lb 9oz. Could this weight be accurate and I've gained so much weight? My next appt. is May 12th could between time the baby's weight increased, if im eating well and taking care of myself properly?