That's strange, my 3rd shot was the only shot I've had that gave me a reaction similar to what you've described. For me it was painful, stiff, and warm to the touch. It went away after the third day as well. Since then, I haven't had any problems at all when I inject -- in fact, I don't have pain anymore, either, and that stopped altogether after the fourth shot or maybe even the third. Glad to hear it all went well. 🙂