Groin pain

Mswords

I am a very active person who does everything from run, bike, swim and lift weights. Over the past year I have noticed that upon trying to straighten my legs/hips from sitting "Indian style" that I get a sharp pain in my right inner groin. It sends an intense sharp pain from my hip all the way down my leg. Also from time to time while standing if I twist in just the right way my right leg goes somewhat limp and I have to almost catch myself before falling. When doing any type of regular groin stretches prior to working out I am unable to replicate it until I attempt to close my hips back to normal. Does this sound more like a muscle issue or nerve being pinched??