Thyrocare 100mcg Tablet

After typhoid ,i am having extreme weaknesses and headache , almost all test are normal ,its more than 50 days now. Fever of typhoid last for 2 days only, i was prescribed cefxime 600 mg daily up to 14 days and after that i am having calcium, multivitamin and iron tablets and healthy food ,fruit and juices only.still weakness and now say to test serium calcium,kft,left and vitamind3 ,echo and ECG too as i suffered from viral mayocarditis in march 2015 as well with lv EF 35 %.Now says everything seems perfect in pulse and heart and precautionaly we can test for echo and ECG,suggest me what to do and also i am conducting all mine test from thyrocare lab.is results from this lab is accurate? Please suggest.