I started taking methalpredisone and Amoxicillin 4 days ago. 3days after starting them I broke out in hives so I called the doctor and he said to stop taking both of them but that it is likely to be an allergic reaction to the Amoxicillin. So I did. Now on day 4 and 1 day of not taking any of it, I have diarrhea and blood with it. How serious is this? Should I go to the emergency room or is this normal and I can wait and go to the doctor tomorrow?