Hello, Thanks for the query to H.C. M. C.
Each & every thing is normal according to various tests as above mentioned tests.
In spite of this I would say please get MRI
of throat ( larynx
and oesophagus region).
If these two tests found normal than consultation a psychiatrist
and only he could solve your problem.
Once again I am saying that if these two tests are normal than search in yourself and you will find the cause of your's dilemma.Weight lost is just due to tension( anxiety
Good luck. Dr. HET