I am parna Pal , female aged 45 yrs . I am a patient of hypo thyroidism since last 10 years . I have family back ground of thyroid [father and maternal uncle] .I am treating by a doctor of APOLLO Chennai . The doctor advised me 75 mcg thyronorm /day . I am taking this medicine since last august 2013 . Yesterday I have checked my TSH and FT4 and got report tsh 4.8 , FT4 1.25 respectively . Now I am feeling uneassy , such as palpitition ,drowsyness , harresness of voice , slight chest pain in case of hard job . Pls advise me dose . Thanking you .