Weird discomfort inside thigh

[Matti Lehto]

When I sit in a straddle or cross legged and bend forward I feel this discomfort inside my left thigh. Could be some kind of nerve entrapment but I'm not sure. Then in that position if I turn my upper body to the left, I can feel something move in my thigh and the discomfort is gone as if the nerve or whatever it is got freed from the pressure.

 

Any idea what this could be? Tried googling but the results were mostly about sciatica, and reading about the symptoms, I'm not so sure it is that.