I've never pinned delts before, always used chest, lats, glutes & quads, so I decided to give my delts a try this morning, I understand it's a virgin muscle but there's no reason it should hurt like this. it's stopping me from most of my workout today. I used a 1.5" 25G pin, and pinned 2ML's. It's 3% BA. I didn't bury the entire inch and a half either. No blood after the injection. I'm stumped, but this is fairly excruciating pain and I can't find any reason for it! Any ideas guys?