My daughter was very sick last year and had a very bad cough for months. She saw several different doctors who were never able to help her. She finally ended up at an Ears, Nose and Throat specialist who right away diagnosed her and gave her the proper medicine that did clear her up.
I did not read all through your thread, but as far as handy things to have in your recovery, I found a raised toilet seat was a must for me, and I recommend one with arms, or even separate arms to help you get up. I did not have the arms and I struggled without them.
Best wishes to you!