Start with symptoms like severe gas, abdominal pain followed by fever, dizziness, severe fatigue and weakness the other day. Fews days later, green stool. Symptoms came and went away in a week's time. Somedays are good somedays it is either stomach burn or cramps and dizziness continued for quite some days. There is a lot of gas, history of constipation since a long period. Light headedness or dizziness and stomach pain and burn is on and off. Since few days, I have pain in lower back, experiencing dry mouth these days and stomach burns and cramps are on and off. A lot of gas is always there. Constipation is there since long. My work includes a lot of stress specially after lockdown, I have been going through a lot of stress on and off. I am a smoker too. Last time before 5 months I experienced similar symptoms (a little worse). All reports blood, stool, urine were normal last time. USG of whole abdomen was clear. This time it triggered after having junk. What could this possibly be?