Since 2 years..i had been using dulcolax to free from constipation and then even dulcolax caused more gas and i remained constipated.After having blood test it was found i have hypothyroidism,stomach erosions. I am taking 150mg of thyronorm and using lactifiber made me feel good to some extent.I found i am sensitive to some foods like idli,beans,onion,soya milk causing me to pass more gas,burping all day and i do have hermorroid. Kindly please help what would be the cause for my chronic constipation and gas.Any reply would be appreciated.