I was limping for two weeks after injecting into my quad. I have injected many many times in the same area with no problems at all, except for a little prop soreness. I rotate and hit the same spot only about twice a month. I just don't understand how I could be so crippled for so long, seriosly was thinking about going to the doctor but stuck it out. now two weeks later I can walk no problem but every once in a while i feel like there is glass in my leg, a real sharp pain in the muscle. my question to anyone who has experienced anything like this is what kind of damage could this last injection have caused to make the muscle retaliate like it did?