So I'm an occasional IV user of meth. I've been self injecting for almost a year so I've got plenty of experience and practice. Tonight I did a shot in the crook of my elbow- didn't have any problems getting it in and registering on the first try. I finished the shot and took the point out and it seemed fine but a few seconds later there was a small bump and it's gotten a bit bigger but not very much. It doesn't hurt at all. I'm just a bit confused bc I've missed a couple times before and it always stung or hurt when I've missed but tonight there was no pain at all through the whole process. Is it possible to miss some of the shot but not experience any pain? Has anyone else experienced this? Could there be a cause for this happening other than missing?