4+ months and still coughing. Guide.

I moved to a different location since Oct 2021 and started to cough. The cough gradually increased on daily basis. Initially I thought it must be due to dust/pollen or pollution and will go away. It was 2+ months ,in Dec I decided to go to a doctor, he put me on antibiotics and cough syrups. After a week of medication, the cough started to return back slowly and it's has been interfering with my sleep. The cough comes at night and early morning, with running nose, slight itching in ear and throat, after some time it goes on its own. I can feel the throat making some weird sound ,not sure if it's wheezing. There's no difficulty in breathing, just a bit of tightness in throat .I have tried gargling ,steam inhalation etc nothing helps. Only Vicks/ Amrutanjan helps in calming the cough ,throat and ear itch as well and only after this application I can go back to sleep. But this is not the solution, my sleep is getting affected and my work-life too. please guide.