21 month check up (is there such a thing?)

21 month check up for Mason.... I know I'm a bad mom, I skipped on the 15 and 18 month immunizations so I thought I better get him in!
Here are his stats at 21 months:
Height: 34 inches
Weight: 29 lbs
Head Cir: 19 inches
He was in the 75% of both height and weight - so he isn't that big of a boy!!! The dr was concerned that he isn't talking or saying more 2 syllable words. So we are taking him to the audiologist on Tuesday to get his hearing checked. I really haven't been too concerned with this because I've been told boys take a little longer and he's able to follow commands when we tell him to do something. Hopefully everything is okay and he will start talking soon!