I have had chronic cough for 8 weeks... have taken 2 antibiotics, nasal sprays, otc tussins, salves, acid reflux meds, to no avail... still coughing. Could this be from acid reflux ? How will I know if so ? No sore throat; no lung rattles, no high temps... JUST COUGHING WHITE FOAMY PHLEGM, and seemingly head congestion. Thanks. B Stewart