Sorry everyone, I haven't logged on since posting.
I still struggle daily with sinus pressure, post nasal drip and fatigue and currently have thrush again.
My findings are symptoms are alot worse with bad diet. I have had a CT scan wereby the ENT said he can only see inflammation with no known cause, he suggested allergies but i don't think so. I purchased a blood glucose reader but my blood glucose always remained in normal range, even after large sugary meals so I knocked it on the head and ditched the reader.
I'm still left baffled as to what is causing my struggle, I use steroid treatment everyday with pretty much no effect. I'm confident that after sugary snacks my sinus pressure is worse, I wen't to see an immunologist whom done a few allergy tests which all come back negative.