question: HELLO --- On July 14th I had a hiatal repair surgery---Some days are good --others not so good-- The problem that concerns me --is awakening from sleep with chest discomfort - the need to vomit & I do !!! Seems  some food is not digested-- Could this be ??? I am eating small amounts & soft foods-- I do drink carbonated drinks--  I am female 86 years old--Height 5 5 1/4 1 normal maintained weight 142--have lost 10 lbs Have had tests  --all with negative results   I do have month follow up tomorrow-