Dry cough from 14 day. Or on gerd.

I'm suffering from last 12 days. I took multiple cough syrup.. Starting 1st day i took adkof cough syrup for three days with 500 mg antibiotic agromycin. After three days when I'm not get relif i went to gp he prescribed me Tab  clavam cv 625,Levocet m tab,alkof Dx cap,prednisolone 10mg, all for 3 days got some relif... After 2 days again cough statred. Went back from gp again this time he gave me himalya kofflet & bresol syrup for 3 days. But problm was not resolve. Today I'm consultan with chest specialist he gave me three days course for telekast -f & deriphyliin for twice in day for three days.. Plz any one suggest me what I'll do ... I hread some dry cough 25% issue related with GERD Nowdays i felt acid reflux in night 8 years back I diagnosed with GERD in endoscopy. And took treatment with ppi sompraz -L Or nexprol -l Plz any Gastrointrologist suggest me should I seek treatment with plumonologist Or on GERD.