Hi ladies! I had my 18-week ultrasound this week and baby looked great -- although, he is measuring 12 ounces in weight. I looked this up and the average weight at 18 weeks is between 5-8 ounces so I'm a little concerned. I doubt my baby is big because I lost weight and had severe morning sickness the first few weeks and my first born was relatively small too... I had a very small belly. I think that my due date may be sooner than my doctor and I assumed -- should I bring this up with the doctor?