are you obese with central obesity?if the answer is yes then wt reduction is must.central obesity causes breathing difficulty.now comming to your other problem fullness and heaviness is your tongue white coated?if yes then this heaviness is due to aam.so it shows that you have tivra agni mandata.if i was your treating doctor i would advice you agni vardhak and aam pachak chikitsa,if your bala permits then i would give you a madham sarak aushadhi for aam shodhan.also light diet,frequent drinking of hot water,butter milk impregnated with hing,jeera,saindhava,pepper is advisable.