Endoscopy, was given cardiac-xylocaine , propofol, some med to dry mouth. after the procedure heart was racing, coughing, jittery, legs shakey. why?

The medication to: dry your mouth has vagolytic effects resulting in elevated heart rate, jittery and leg shake. Also post anesthetic you would not be clearing your secretions normally so you would probably cough. The Lidocaine was probably given because the propofol burns in the IV and is very uncomfortable without it. It all sounds pretty normal and routine. No worries.

The most significant of the above listed signs/symptoms would be the tachycardia-- heart racing. Probably a side effect of the anticholinergic med used, either atropine or glycopyrrolate. Self limiting and usually of little concern.