4 days with little food - bloating burping

[Dieselram2500]

It's been day 4 now with little food. I havnt been able to eat much before I become full.  After eating I become bloated and after drinking water I burp a lot.. no fever no real pain.. went to the er when it first started due to my chest being tight.. they said my heart was good and sent me home... the next day I vometed up most of the food from that day and the day before.. which made me feel alittle better... no bowel movements the past 2 days probably due to very little food intake...