hi i had gone through your query and understand your concerns. i would come up with three most possibilities to fit your case.these include
1.first possibility is,AMOEBIASIS;.It is caused by a protozoa,
Entamoeba Histolytica. It is commonly spread by water contaminated by faeces or from food served by contaminated hands. Even vegetables grown in soil contaminated by faeces can transmit the disease. It can also spread to other organs like the liver, lungs, and brain by invading the venous system of the intestines.
spot stool examination may confirm the diagnosis.
2.second possibility IBS;
IRRITABLE BOWEL SYNDROME,is a symptom-based diagnosis characterized by
chronic abdominal pain, discomfort,
bloating, and alteration of bowel habits.
3.third possibility is,FOOD POISONING;
treatment plan;
i advise you taking
Homeopathic medicines gives safe and permanent cure for your complaints
Usually in such cases I will give treatment for my patients in the following manner..NUX VOM 1M tid after food /week
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints. or mail me at drravib4u@yahoo.co.in
I hope this is helpful for you, thank you