For some time now I have had a thinning of the mucous membrane in my nasal passages. Also, while "it feels" as if my nasal cavities are congested, attempt to discard any nasal mucous, only reveals a small, thin, wafer-like flake of mucous.v However. 'it feels" like I am still congested! There is a slight wheeziness in my overall breathing. Plus chronic coughing from time-to-time. Please advise. Thank you