Thank you ladies. It is very nice to get some support and to know I am not the only one going through this.

I am not sure about the food additives etc as he has not changed his diet in any way so would he react now?

I don't think he is getting sick as he usually doesn't behave like this but will be going to to Drs if it continues to rule out anything medical.

I spoke to my mum (yah for mums!!) and she said that he could be going through a stage where he is thinking more about what is happening around him and what will be happening in the future. He could be overwhelmed. We will be going through some changes soon with a holiday in a week and we are moving over Christmas as well. Cooper knows all this as we have discussed it, read stories about it, shown him pictures of the new house etc. Hoping this is what it is but I just don't know.

Thank you again.