Need help and advice for son

Hi, I have a son who is 7 and has struggled for the past few years with interaction with his school peers, finds it hard to express thoughts, feelings and emotions, gets very upset with any changes to routine and likes things to be the same as always with anything. We are convinced he has asperger syndrome but don't seem to be getting much help from his gp, he has been seen by camhs but that was a total waste of time with them basically saying 'well he can give eye contact so there's nothing wrong with him' both me and my wife are so up a high with stress and worry for him and just want his daily life to be easy for him. He is very good at hiding all of these symptoms at school and the teachers don't see a thing wrong but are helpful at least and are always in contact. But we just need somebody to listen and help, and maybe get some sort of diagnosis somehow?

Many thanks for any help or advice.

Kevin.