2cc in your delt for the first time is about the upper limit. I only put 1.5cc in my delts. Because it was sore within minutes leads me to believe you may have injected too fast or possibly moved the needle around during the injection. Just incase you don't, be sure and change pins after filling the syringe. Inject slowly (30-60sec. per CC.) Massage the area after injection for a good 3-5 minutes. Hot as you can stand showers with the water directly on the injection area can help too. Quads will get sore the first time too. They are probably the worst for me. The virgin muscle soreness will improve, it gets better....
