I Am Now 33 Years Old And Have 5 Children.

I am now 33 years old and have 5 children. now my youngest baby is 8mo. old after 7mo. of giving birth of my oldest child i develop a small goiter. we go to a doctor to check my t-4 and t-3 and its all normal. the doctor give me thyrax to take and vit. b complex to maintain. the thyrax i did not continue to take because my baby is beastfeed. i continue taking vit. b-complex and my goiter is not noticeable. the problem is after giving birth of my fourth child my thyroid is became large and it became multinodular goiter and i always havea plegm or cold in my throat sometimes the color is green and it smell bad. i blow cold in my right nostril always and it smell bad sometimes i think that the of cause of the enlargement of my throat because of the stock mocus in my throat. I consult another doctor about this and i have already undergone thyroid scan and the result is my t-3 and t-4 is normal but i have a multinodular goiter. again they give me thyrax to take but i cannot continue to take it because i feel bad when im taking that medicine i do not know the reaction of my body to that medicine so i stop taking it. the doctor tell me to come back again after 3mos. but i did not because of the financial problem. when i have a problem and always think about that problem and i am disgruntled i feel the pain in my throat. i always search trough the internet some possible remedy for this but i cannot satisfied. i tried to take food supplement but because of my financial condition i cannot continue to maintain. Some people tell that the cause of my goiter because of the spasm and relapse due to childbirth. Please can you give some advice or affordable and safe medicine about this? Thank you... for your time and reply..