Suggest Treatment For Fever With Upper Respiratory Tract Infection

hi i will be 20 this jan . i was 12 years old when a local doctor diagonised me with....bronchitis...i took inhalers then for a month and when suddenly aftr a month the medicns were over i had a high fever day after.....i switched to ayurveda then and was taking precautions....but when my board exams started (16yrs old) i dint have time for yoga and since then i m on no medicns also but i do take precautions now.....i have a cough, nose irritations, running nose, back ache, breathing problem,throat pain and sometimes fever whenever there is a seasonal change or i am in A.C or i eat oily or junk food(McD) its winter or rainy season the doctors just give me medicens but this is like for ever never ending.......i am irritated with this problem and wish do not wish to take inhalers forever.....please help(i am 5.3 foot my weight is 48kg)