gaging while eating.

My husband for the last 3 months cant eat anything besides cracks and milk. But also cold or hot drink cause him problems. He is bloated his stomach but his throat and face has lost weight. He vomits everything he eats, one bite he runs to the bathroom holding his chest,in pain. Been on nexium for a yr. Very concerned. Hos uncle died feom his esophagus exploding, bleeding to death. So now my husband drink like a fish, to were hes drunk to feel no pain. So afraid i will find him dead one morning