Another Sinus Infection

We went back to the doctor yesterday for a little check up and to get SHOTS!!!!! First things first his PFT's were 108% so we were doing our high numbers dance. But somebody tell me how him growing an inch and losing a pound takes his BMI from 54% to 32%??? He was coming in for a check up from his last two week antibiotic treatment for a sinus infection and it turns out he's gonna be on another antibiotic because we just can't seem to clear his little head up.
So here comes the shot, he knows it's coming because we've been talking about it all morning, and he's gotten to where he really hates shots and acts a complete fool to try an avoid it. So the nurse comes in and he lets his body go limp and starts sweating and crying immediately. He's waiving his hands and saying "wait wait can't we talk abou this". I try to comfort him and talk his down but he's being so rediculous that me mom and two nurses hold him down. He's setting on the edge of the bed with mom holding his legs I'm setting to one side of him holding his arm and keeping his head turned away from the needle and the nurses are on the other side holding his skinny little arm still (to be in the 32% BMI percentile he's REALLY strong). So we're telling him he's gonna get an ice cream and what will make this better, how can I make you happy and just as the nurse sticks the needle in he yells A TOY! We giggle and start putting on the band aides and all and he shrugs his shoulders and says, "that didn't even hurt". This child is just too much for me!