My 2 year old keeps saying no Thomas. I ask him who is Thomas. He points to himself saying Thomas. I say are you Thomas he says no. I say where is Thomas. He says I don't know. He went to his first movie at a theater to see Fankinwennie. He did good till he seen a cat that died and he yelled noooooo Thomas. His name is Lex not Thomas. Should I be worried?