I had only shot up 2 and a half days in a row, and hadbeen having my S.O hitting this same spot on the side of my wrist quite frequently and had no issues (he studied phlebotomy) and when he wasnt around, by following the small mark he left behind, I was able to hit myself successfully in the same spot a few times while he wasnt around but one day I was getting frustrated and let my roommate hit me through the same spot and it registered at first but as she was plunging it, she pushed the needle forward and I felt it burning and stopped her immediately & she literally missed less than 5 units but now there is a small ball on my wrist... it is red in color, and hurts when I apply pressure to it. It also turns white in color when I press on it. I've been using antibiotic ointment, and applying cold compresses to it. Shall I switch to hot compresses, or is there anything else I can do without having to go to the hospital?