Sara, it's exactly what the MCHN said, a gain is a gain. They only start to worry if she had started to loose some or stay stable to a long time. My girl hasn't put on any weight since she was 12 months old. She went up to 10.28 at 14 months but now she is back down to her 12month weight. I was really worried about it, but neither my doc or the hospital are worried. They said as long as she stayes above the 3rd percentile and she is happy and looks healthy, there is nothing to worry about. She is just petite. Kaetlyn sounds like she will just be petite as well. I hope this has helped to reassure you, that all is well.