Help with my Grey (GIZMO)

My Grey injured his wing about a month ago. Thank god he is fine but now he sees me and runs and squeaks this horrible noise. He used to never leave my side and was with me constantly now he does not even want to see me. This happened right after I took him to the vet.  He will not take food from me and he doesn't even want to see me.  This is killing me.  Any suggestion would be appreciated.  He is 3 years old and I have had him since he was 6 months old.  

Before this he only wanted to be by my side.  He tolerates my wife and kids but I was always his favorite.  Now he tolerates my wife and kids and he hates me.