I had to stick myself twice the last time I did my shot because I noticed an air bubble in the syringe the first time, and I took the needle out to get rid of it. I expected it would hurt longer because of this, but it's been 6 days and I have a bruised lump the size of a half dollar. (It's not hard or hot to the touch.) I do my injections in my glute and I can walk with no pain, but if I sit on it wrong it hurts a lot. My experience has been that it hurts the day of the shot, plus 2 days after, and then I'm good to go. This is twice as long as usual, and it still hurts. :/ I don't want to overreact, but at what point should I worry about this?