Thank you for the additional information.
From your symptoms, the blood in stools seems more likely to be due to hemorrhoids. This has to be confirmed by a per rectal examination. The good thing is it can be easily managed and with adequate measures, it will resolve. The heartburn and chronic diarrhea have to further evaluated to determine cause and for proper management.
I have the following suggestions.
-Please consult your GP/ surgeon for examination and confirmation of diagnosis.
-A routine stool test, if not already done, for evaluating chronic diarrhea.
-An upper GI endoscopy to visualize your food pipe and stomach and look for causes of heartburn.
-You can restart yourself on Omeprazole and take it for a week.
-If in case, rectal examination comes negative, a colonoscopy is required.
-If hemorrhoids are confirmed, then the management will be:
*Fiber intake of 20-30 g/day, You can start a fiber supplement like Metamucil as 10 g in 1 glass of water/juice, three times everyday.
*Warm sitz baths 2-3 times daily.
I hope that was helpful.
Please let me know if you have any queries.