It's 4.30am my baby is asleep and has been for over an hour and yet I am wide awake and can't switch off! Left the room as every movement DH makes is driving me crazy too. Ive had about three hours sleep total tonight so far and now I'm stressing about how little sleep I've had, how my baby is likely to wake up any moment again and how I'm going to function today. Which I realise is not helping me sleep. 
Ahhhh!