Over The Past Few Months I Have Been Choking On

Over the past few months I have been choking on my saliva several times a day coughing upwards upto a minute and a half. I also drool. I had a barium swallow yesterday and they were unable to get the barium to coat my whole esphogus it appeared there was some blockage or narrowing. I was diagnosed with TMJ a few months back as well. I am curious if the TMJ could be the reason of my choking and drooling or is it possibly something more underlying.