Hi.
Thanks for your query.
Noted the history of a known case of
pancreatitis and
gall stones, gets feeling of motion 4-5 times in a day but nothing actually comes out after sitting on the toilet seat, if at all black/really dark brown feces are passed, there is feeling of incomplete evaluation. taking coke since then as the foods increase the problems.
As per the history you have provided this looks to be procto-colitis that is inflammation of the colon and the rectum.
I would advise you teh following in such a situation:
Send the stool for routine tests including occult blood.
Tests of blood and urine,
Ultrasound of the abdomen.
A course of an antibiotic and
metronidazole along with probiotics and activated charcoal.
If there is complete relief well and good.
If there is no result then you may need an upper GI Endoscopy and
colonoscopy and an opinion of a Gastroenterologist for clinical evaluation, examination and proper management.
Also get a proper treatment for gall stones,
cholecystectomy at an appropriate time and of pancreatitis.