Community medical question

I am suffering from severe non stop cough with white spit like mucous from nose and throat I check doctor he said u have nasal polyps and tonsils and your nose bone is tilted he operate my reasenotonsilectomy year ago in July month after operate I had severe cough for three months now it recover I had no cough but again in February I had severe non stop cough when cough start I had start running mucous from nose and thraot I used expectorant syrup everyday it give relief then after a month cough stop then again after two months non stop cough start in a month I complete antibiotics course three times then I check to my doctor who operate me he said September is pollen allergy weather and u have issue ur nose bone is tilted when ur mucous drip down from your nose to throat cough start he gave me antibiiotics softin tablet and ask me to take nabulizer I do but not much relief then on other doctor advice I take some mucous killing injections and I take 5mg softin tablet everyday and expectorant syrup everyday but when I stop tablet I had lot of sneezing non stop coughing my eyes turn red in these days I take softin but instead I had lot of non stop cough starting from night still