i am not a doctor just an informed medical consumer. i would have someone take you to the emergency room. your symptoms are suspcious of bleeding in the digestive tract perhaps significant since you are lightheaded. if you are reluctant to do that at least call your doctor. if he's not available i strongly suggest having someone take you to the emergency room.
dizziness nausea bright red blood when i bm. i have dizziness light headedness similar to being drunk but have not been drinking today. i feel nausea that i would normally associate with loss of balance like after spinning too much or on a roller coaster. i used the toilet and found bright red blood on the paper. recent issues hematoma in my left arm from giving blood. medications:diclofenac sodium for the hematoma. (up to 3 days ago). salbutamol (mild asthma sufferer). platelet and clotting tests came back normal. i am 31 years old and male.