Whats wrong with my beardie?!?

Well I purchased my beardie about 2weeks ago. I brought him home and he seemed to be doing fine until this morning. He suddenly acting really irate. He keeps his head and tail up and almost looks like hes trying to do a backflip. He would do that for about 30seconds then just lay there. He isnt active at all anymore. He just lays there or acting really irate. He doesnt put his head down anymore. It just stays up asleep and awake. He also has heavy faat paced breathing then it doesnt look like hes breathing at all. Any and all help would be greatly appreciated. I juat want my bearsie to be ok and live a long happy life. Thank you