I am trying to fiogure out why it almost ALWAYS hurts whn i pin in my thigh.. Like it doesnt hurt when I do it, just the next day its sore as hell.. It probably lasts a few days. It hurts to the point to where i cant even do a leg workout day. It doesnt matter what I actually inject or inject with.. it always hurts. Any tips on how to stop the pain enough to do a workout?