diarrhea, stomach pain? If pain, then it should be suffering from chronic enteritis, and if hurt at the same time feel so weak, I wonder if you are disgusted by the smell of oil or smell like smoke flavor when cooking when there is no feeling of nausea? If so, then I suggest you go to the hospital in the morning to do a fasting
liver function tests to see as to prevent the occurrence of hepatitis (hepatitis have a sustained fever).