It sounds like acid reflux to me.  I had all those symptoms today in the middle of the mall of all places.  I have not been taking my Prevacid for the past 3 days as had not picked it up at the pharmacy and I am positive that is why I had the attack today.  I was on Protonix daily for over 5 years and it just wasn't doing the job any longer; have been on Prevacid for over a year and this was the first attack I have had in a very long time.    If you keep having the symptoms, I would suggest going to a GI doctor and having an Upper Endoscopy; that will show whether or not you have reflux disease or possibly something else such as a Hiatal Hernia.    Good luck and hope you feel better.