saddle fitting

[ilovecobs]

I am going to be getting my saddle fitter up soon to refit my saddle. Once the saddle is refitted should i get a physio out to check her back as she hasn't had a saddle fitted for like 8 months and im worried that there could have been any damage done? I ride with a sheepskin halfpad and a normal thin cotton saddle pad under that. I use the half pad mainly because it looks nice and fluffy (yes silly i know but we all do stuff like that sometimes lol) and im wandering will that mean if its slightly badly fitting not as much damage will have been done?

any suggestions welcome
thanks