Big Boy, Small Boy

We had Blake's 4 year well visit this morning.  I was dreading it because I knew he'd have to get shots and now he's at an age of remembering this visit and was worried for two reasons, a) didn't want him to freak out during the shots and b) I didn't want him to start being afraid of going to the doctor.  Because now, he loves it.  There are lollipops involved after all.    I had heard the 4 year shots were not good.  When the doctor came in he verified my fears and said, the four year shots are pretty much the worst ones they'll ever get.  And that there was a good chance our day would be filled with an irritable and grouchy little boy.  Boo.  Blake didn't flail his body during the shots like I was worried he might, although I was pinning him down (tear) but he screamed...and I mean screamed bloody murder during the shots.  Alligator tears streaming down his face.  My heart broke for him.  Poor guy.  But he quickly recovered when the nurse gave him a little action figure for being so brave.  Little brother even teared up a bit because he was so worried about Blakers.  So sweet.
But what is not so sweet is the doctor was completely right.  He was doing so great immediately after the shots and then we had the biggest melt down in probably over a year.  We all took a time out and I'm praying we can get through the rest of the day relatively unscathed.  
Stats: 44 inches tall, 45 pounds.  95th percentile for weight and height, which the doctor says makes Blake the size of a five year old.  Big Boy!!
It absolutely blows my mind how opposite my boys are.  I'll be honest, it upsets me in this one aspect greatly.  Brady barely being on the growth charts, if at all still, and Blake almost topping off the charts in the other direction.  We've gone the longest we've ever gone without seeing a specialist for Brady.  We go again to the gastro in a few weeks.  And I'm ready.  I'm ready to hopefully be reassured that Brady is doing well.  Yes, he's HAPPY, filled with joy this boy is, and he's been relatively healthy the last few months, which is great, but his weight....  He's not gaining.  Maybe he's still where he is supposed to be relative to his curve, but I just need some reassurance. I want him to one day catch up to his big brother. Geez, I'd just love for him to wear the size clothing someone his age should be.  I'd love for my baby boy who came into this world as a big 8 pound 3 oz bundle of joy wouldn't be the same size as a baby born at 24 weeks.  Anyways, just needed to vent that out.  ::end rant.