im doing 250mg sust shots to my thigh n everytime i do my left one i get this horrible pain for 2-3 days... i shot today in the morning and felt fine up untill a couple of hours ago... now i can barely sustain my weight on it and walk. this crap hurts... what gives?? i massage the sight after the shot.. when i do my right leg i feel fine. am i pulling out at an angle or something? help!!