Cough 1 and half month. Monteklc!

Hii I am Non smoker i have cough problem sometimes white mucus or transparent from 7 weeks & its not going. Only in day no disturb Night. morning after breakfast 2 to 3 time small amount in yellow color thick. First i consulted General physician they given me Opox Cv 5 day, Bandy plus 12 & Montairfx for 20 Days. CRP - negative, igE 682, 2 Chest X Ray Normal, 2 PFT normal pre & post, then again dr give antibiotics for 5 days 6mg steroid tablet & montair fx for 5 days then cough frequency been low but its not going & then i visited a pulomonologist they seen report & told its Cough Variant Asthama they given KLM - fx 180 for 20 days & Seretide accuhaler 250 for 3 month 2 - 0 - 2 puff . Its been 10 day by using this but cough is not getting settled & i was feeling mucus was salty & got small bump & redness on back wall of throat then i gone at ENT they told its PND . Now i am Confused its PND or Cough variant asthama. ENT also gave me antibiotic ‚hetrazen , nose drops,gargle,montekLC