So recently I pulled a muscle that seems to be right underneath my right butt cheek. It's not really painful but whenever I try to sprint I feel quiete a bit of discomfort. I'm not sure what it is but I've been doing various stretches hoping it would get better, but so far it hasn't. My question is have any of you had a similar injury and is there a specific name for it? Also how long will it take for me to recover?