thought i'd update
Paed asked for the referral before she would book an appointment - read it, referred us straight to paed surgeon
X ray was fine - DD was fantastic and laid perfectly still. results tonight confirmed no obstructions and no obvious points of note

GP tonight was reluctant to write referral for surgeon. he was looking at DD saying "she looks like a normal, happy, healthy 2 year old" - i agree!! BUT, his suggestion to cancel the appt we have with paed surgeon (which isn't til march!) and see GP then if it's still a problem and book surgeon from there just didn't sit too well with me at all. if it stops being problematic, then great, we have an appointment, we can cancel it. but if it becomes more problematic, i don't want to start our three month wait all over again when it's already a problem!

hopefully DD will grow out of this - but if not, we have a plan of attack for it.