I Have A Sharp Pain In My Left Leg, Front

I have a sharp pain in my left leg, front of hip, towards the groin area in my " panty line" area. I think its some type of overuse injury from biking in the mountains of Colorado. It hurts when I stand then eases once I start walking and sometimes when I turn quickly I'll get it then it will ease. Its a sharp pain and the leg will feel like it can't bear weight, both the pain and weakness will ease.