you still have 2-3 weeks to go this is the time baby puts on weight so eat good protein diet it should help.

Yes fetal weight on ultrasound can be plus or minus 250 grams at this stage of pregnancy. It also depends on the weight and structure of the parents. If both parents are small built then the baby will be on the lower end of the range. A healthy birth weight for an Indian baby is between 2500 to 3500 grams.