Ask an Endocrinologist. Get Answers to Endocrinology Questions.
How tall are you? How much do you weigh? Did you have colonoscopy? What is your stool like now? When did it start? Any other symptoms? Are you aware of anything which might have triggered it? Any medical problems? Any surgeries? Any other medications? Any family medical history?
It is not normal that there is blood. Since they didn't find anything, it could be due to colitis (inflammation of the colon). The result of the biopsy will tell you more detail.
Did you get any medications?
You don't worry about it. When it is healed, the blood will be gone.
If you have GERD, you should take over-the-counter proton pump inhibitors include lansoprazole (Prevacid 24HR) or omeprazole (Prilosec OTC). It reduces your symptoms but doesn't cure. For the cure, you need to have a surgery if the medications don't help you.
When the medication doesn't work, your doctor will recommend you. There is a laparoscopic surgery for it. Try the medication first.
It is okay.