I Believe I May Have Something Rare Going On Here,

i believe i may have something rare going on here, blood tests says i have hyperthyroidism classic symptoms except i gain weight, i have continued high(for the last 4 years) cortisol levels and not due prednisone or any thing like that, i also have a elevated white blood cell count that climbs higher every year(18000) i have high blood pressure controlled by meds and retain fluid all of the time!. i look puffy all of the time every dr. just shrugs it off!! tired of feeling tired and bloated and i watch what i eat! what is wrong with me? bone marrow shows no cancer at this point in time! Thank you for your time