Hi The Sed Rate or ESR measures infammation so if you have a flu it would be high but the usual is 20 or less i know my usual hovers around 63 at good times and has gone loads higher with the RA in flares
i'd think he would re test you once your Broncitis is under control Becaust remember these are all inflamation illnesses so it could just be crazy at the moment
but if it is still High once these are better Then you'd be looking at getting checked out as there are a lot of diffrent illnesses that raise the ESR.
So i guess try not to worry spend your effort in getting better right now