Very strangely my 4YO DS has suddenly become very attached to me. Nothing out of the ordinary happened that I can think of recently (well his Dad went on a business trip for 10 days but they are not massively close at the moment so doubt that could be it). He is driving me mad constantly calling for me to find out where I am then running to find me, crying when I leave him at nursery and coming into my bed at night. He never used to do any of these things and has always been very independant.
Any ideas why this could be and how to stop it?