I tripped and fell 2 days ago. Evidently hit my left arm because it is very dark purple-black from above elbow to wrist, sores on knuckles and very swollen. It is very sore but can t say it hurts that bad. I can move it and have feeling in my hand. I am diabetic on insulin, have a pacemaker and am on blood thinners so I figure that s why I am so bruised. I am almost 71 yrs old. I see my diabetic doctor tomorrow but my family thinks I should go to ER clinic today. What do you think?