Hey there! At my private scans (16w and 28w), the tech mentioned that she was concerned with one of the measurements and had asked me if my regular gyn had mentioned potentially having a small baby. They hadn't and even when I brought it up, they said those measurements can be off and dismissed me. I forget when my gyn started to note that my fundal height seemed a little off, but it was about the same time as you. 32w-ish, but I really don't recall. Just that I was definitely tri three. The last exam before I gave birth, she told me my baby was about 5lbs but not to panic because they grow x amount each week and I was probably still a few weeks from delivery. Well, joke was on everyone. I went into labor a couple of days later. My son was technically full term gestationally, but he was only 5 lbs 3 oz at birth and 18 in. I did have to give him the Neosure formula until he developed an intolerance to it. He grew super fast. People would never guess now that he was only 5 lbs at birth. I think by 15 months he was 60th percentile when he was born literally at 0.02 percentile. I was told that if I ever have another baby that I need to ask for additional growth scans though.