I just injected 3/4 of a cc in my right delt and when I pulled out there was a fair amount of blood running all down my arm. I aspirated and it was all good, although it did feel a little bit odd going in. Anyway I am using a 25g needle and my question is this: Why do I have a small hard lump exactly where I put in the needle. I am sure I hit the muscle as I havent had a problem yet and I am 5 weeks into ed injections. If anyone could help me out I would really appreciate it. Thanks fellas.