What Happened?

I want to know what happened to my sweet, quiet, laid back baby that I once had. Dawson has started this terrible phase where he yells at me because he did not get his way. It is a high pitch-squeal scream that starts and stops and he keeps doing it until you distract him or give him what he wants. It started last week when I was sharing a banana deserret with him and it was all gone, I walked away with the empty bowl and he stood on the back of the couch and yelled at me over and over again. Now this is a very angry scream not just a loud boy. At first is was really funny and we all laughed and everytime he did it we could not believe what we were seeing. I have started to put him in his bed (like a time out) I tell him no and leave him there for a few minutes. When I come back, I love him. I do not know what else to do. What do all of you think?

This is a picture of the face he makes when he does his little fits! I know it is hilarious!!!!!