My brother was injecting meth Friday night and skipped a vein. Now 4 days later he calls. I ve got him on Tylenol pm because his arm is so swollen he has stretch marks from this. It is his right arm and it s swollen like a sausage ready to explode. The skin has cracked and is leaking. I put on Hydrogen peroxide and no white foam appeared. He is in terrible pain and has extreme anxiety as he says its going towards his heart. When do I know when it s time to take him to the E.R.? He s been this way 4 days. His BP was normal but sugar was 330 - normal for him since he won t go to dr.