Demon child!!

So I just finished watching some show on the SyFy channel about people being posessed by demons. No more than ever I am convinced my child or spawn, is posessed!! One minute he is fine and talking normal, then the next he his making these awful annoying sounds or growling and flying around the house!! He throws things and screeches these horrible sounds that sound like a different language. He used to be so sweet and quiet, that is why I truely think he is now overcome by a demon. If anyone knows of a good exorcist, please send him my way!! Someone told me there is no terrible twos, its the terrible threes, but I am not so sure of that!!!