Our DD2 aged 18 months has,over the last few months decided that if she falls over and for instance bumps her head, then she takes a deep breath as if to scream then 'forgets' to breathe until she goes all floppy. I have to lie her on the floor in the recovery position and she comes round in about 10 secs (seems like a life time!!) She is worse if she is ill or tired and she has done it about 5 times now. Is this a normal stage in development - somebody please tell me that she'll grow out of it -soon