Hi, I am 47 years old and suffer from diabetes

Patient: Hi, I am 47 years old and suffer from diabetes and arthritis. 5 days ago, I fell out of the bath backwards and banged my head on the floor. I got up and refused to go to the huspital. As I felt I didn’t need to. Now after 5 days, I noticed a lump on my head Behind the ears and it is very painful. I an now in a different city to where I live. What should I do please help.

Doctor: