Hi I Was Taking Thyronorm 25mcg For 6 Months And

Hi I was taking thyronorm 25mcg for 6 months and then I increased dosage to 50 mcg .. I started having chest pain and pain in my left dose of throat . I stopped taking it altogether, even after 4 months I do I occasional pain in my throat , choking feeling while eating and hoarse voice especially after I do my aerobics exercise. Please advise