We had a small fire in our apartment building last night. The alarm frightened my cat, and when I tried to carry him out, he bit me. I'm not worried about infection, as I was already on amoxicillin, but he got me right in the joint of my thumb. Now, it'r slightly swollen, red, and very painful. It even hurts to touch it at the base. I'm a diabetic as well. Should I be concerned?