Stomach cramp and acidity. Are paining?

Actually I'm facing acidity problems for many months and got treatment from many doctors for acidity problems but it didn't help me at all. Few days ago I felt whole abdomen suffering from pain later I felt heat in abdomen and back side of my body,it is unbearable cause whatever I eat I feel heat from chast to lower abdomen and after taking meal some how I feel heat and pain in right &left side of the stomach and pain in back too. When I touch my body especially abdomen area I feel heat all over, I also feel fever and weakness. I'm unable to move easily. This acid do come to my throat area some time. I have sensitive body too. So avoid too much medicine and prefer generic medicine mostly. Doctors have prescribe & given treatment for acidity problems. Few months before I felt something broke near naval area due some sexual activity. I don't what was exactly that I literally felt something broke near naval area. Now a days I chew my meal to have better digestion but my teeth are paining