Hi, while training for a half marathon I felt I had pulled something in my groin/hip area form doing leg kicks with ankle weights. Two days before the run I felt pain in my right side buttocks. I ran, with some discomfort but nothing I couldn't handle, the very last step I felt something pop near my groin hip area on the right side. It's been 8 days since the race and the pain comes and goes... I mostly feel the pain when I'm walking in my right buttocks??? Any suggestions?