Hi welcome to Health care magic forum.
Thanks for choosing H.C.M.Forum.
Mucous started 6 days ago, it is yellow, in the back part of the throat, got cured with
mucinex, and saline spray some times voice is raspy.
It appears to be the infection of the
sinuses, with bacteria. it won't go to the lower part of the throat, it will go into the stomach.
I advise you to consult an E.N.T.surgeon for diagnosis and treatment, You need an antibiotic for complete cure of the condition. You may need to have an
X ray besides other routine tests for confirmation.
Wishing for a quick and complete recovery.
Best regards.