Thanks for writing to H.C.M. for your query.
I have gone through your query regarding your problem of difficulty in expectoration of thick mucus, and feeling of choking
due to mucus.
Considering your complaints it appears as you are having upper respiratory tract
infection. There may or maynot be involvement of sinuses, or the entire phenominon may be allergic.
You are advice for these basic test for clarification of your problem-
(a) C.T.scan of paranasal sinuses
(b) Culture and sensitivity of your sputum.
(c)Respiratory function test.
(d) Direct Laryngoscopy
By the inferences of these investigations one can reach to correct diagnosis which can be manage accordingly.