Dear sir, never underestimate your symptoms cause of not having insurance. If you were in my country you could do any of procedure or diagnostic test for free. But lets go back to the point. Your symptoms sounds like typical gastritis
or GERD. In these disorders pain is usually more severe when lying and after eating specific food. This breathing problem associated with that kind of pain could mean that you suffer from hiatus hernia( your stomach is pushing your lungs). You should try avoiding coffee, alcohol and fast food and see is it gonna be better after it. If not then you need some of antiacid medicines and to do gastroscopy no matter how much it cost because it is the only way to find the right diagnosis. If notice blood vomiting
or black stool
and paing associated with fever
go to ER immediately.
Wish you good health, Dr. Ivan Romic (Rominho)