There is swelling near my thyroid gland but it reduces after few days and appears again after 2-3 months persists for 15 days and again reduces. I am having thyroid medication for the last 20 years. Additionally I have sore throat and appears that there is some cough in my throat. I had suffered from tb when I was 8 years old and also have developed bronchitis. I have lost 4-5 kgs weight in the last 6 months. Is there something I need to worry about?