Hello. I'm sorry you're ill. The symptoms you've described here are very worrisome. If you have blood in your stool, there are a number of possible causes, and they are all potentially dangerous: inflammatory bowel disease
(e.g., ulcerative colitis
), a bleeding ulcer, infectious diarrhea, gastritis (inflammation in your stomach lining), diverticulosis
and even bowel cancer can trigger gastrointestinal bleeding
. If you lose enough blood, you can become anemic, which could account for your dizziness, difficulty concentrating and chest pain.
I suggest you seek medical attention immediately.