I finally got him to sit still for a while. So yeah I took him to the vet today and everything came back good. He's as healthy as can be (i assumed this anyway).
He was a little shaky there to be honest. I never saw him act the way he did there...fidgety, didn't want to get on the scale, and every time the vet would touch him, he'd get scared.
It's funny because at the scale in petco, he ran right on it and layed down lol.
I took him to the park for about an hour before we went though so he would be tired out...he ran in the mud the whole time haha...it was so cute.