Well back from the Dr. and even though she couldnt find anything wrong as such she thinks that it is reflux (but not gastric reflux needing ant acid etc) and it is the reflux that makes it sound like she is having breathing difficulties because she is competing with milk coming up and trying to breath.
She suggested that I express the feeds that she seems to be worse at and add some thickner to the milk and see if that helps, I am going to do this just before she goes to bed and see if it helps.
She didnt say that sleeping on her side was 'ok' but I think that is partly because they are worried about SIDS, however I am going to keep trying it as long as it works, because I know that she is not going to roll over if I carefully wedge something next to her.
We bought an Angelcare monitor today to try and see if that helps with me getting a good nights sleep, because at the moment I am just parinoid that she is going to stop breathing in the night.

Nic- Great photos of Nixon (how cute)

Bath- Sorry to hear that you are having a tough day.