question: Hi, I have not had an injury but the backside of my ankle, hurts has a lump and it feels warm to the touch.  I am able to walk on it although it does hurt to do so.  I would say a 4 on a scale of 1 to 10 being the worst.  Its been like this for about 4 days.  Should I go to the ER or wait until Monday to see if my doctor can get me in?