Ok my 2 year old son has been acting really strange the past few weeks. He started saying this creepy chant that nobody can really understands. The entire time he is doing this he tenses up and makes his whole body shake. Then one night we were in my bedroom because he was scared to sleep in his own. He was laying there and just randomly jumped up went over to by the window in the shadows and starts pacing back and forth. As he was he asks in an increadably creepy voice "where's grammy". Then later that night he jumped out of bed again and went to the window. While he was looking out he said he was supposed to go to someones house. I couldn't hear who he said. When I asked him he said "I'm not talking to you mommy, or about grammy" he then went to look out the window, got visibly upset and said "it was supposed to be tonight". Then tonight he was sitting on my lap and started to get really worked up like when he is upset. I asked him what was wrong and instead of answering me he just starts sobbing these really gut wrenching sobs. This is all really starting to concern me...any suggestions?