Hello Doctor, I have been ill now since last week tuesday with all the symptons for CMS and have haad blood test yesterday and a ECG todya which all came back OK but I don t feel ok! I can be sitting and suddenly feel like I m in a fast moving elevator descending even though I haven t moved! When I get up I have the same feeling! I wake up every morning since this began with a pounding headache my head is full of lead and I have to wait a moment before I can lift it up.Doctor says rest for a bit longer but I ve had two colleagues over the last 4 years you were perfectly healthy then they felt unwell and after numerous test and being told everyhting looks fine they both developed cancer and died within 2 months - can a building give people cancer?