My son overdosed last year. By the grace of God, the ambulance was able to get to him in time to save his life. You'd think that make him stop, but he's still using drugs. I have Narcan in my drawer now, so that I can give it to him right away. Last time he was so angry after the Narcan. I'm afraid he won't want me to call 911. Should I call 911 first? Or do I even have to call 911 if he wakes up?