I wear 6-9 month clothes now

Mommy put my first 6-9 month outfit on today. She will get the pictures posted soon. She said each time she moves me up a size she realizes how small the previous size was on me. Apparently, I could have worn these 6-9 month outfits a week or two ago. When I was 5 months old I weighed 15lbs on Mommy's scale. Today when she weighed me in clothes and diaper it said 16.5 lbs... I hope I am not too big! We go to the dr. on the 30th. I am trying to stay in the 50% range!!!