Suggest Remedy For Constant Voilent Cough, Choking Spasms And Laryngospasms

hi i am a 59 yr old female that has been dealing with violent coughing and choking spasms and also laryngospasms for over 5 years. i have been to ent specialists, pulmonologist, neurologist, general practitioners...taken dozens of tests and medications...ended up at stanford university ent department a couple of years ago without enough relief. am currently taking lyrica which seems to be about the only thing that helps...i HATE the side effects but it has mostly stopped the laryngospasms (which were terrifying) and has helped the frequency, duration, and intensity of the choking episodes by about 50%. but the other 50% still impacts my quality of life significantly...involuntary vomiting, stress incontinence, and the forceful expulsion of saliva, mucus, food and drink are major deterrents to interacting with people...both publicly and privately. so my question is... where do i go now, who do i see? PLEASE HELP!