Leg spasticity

I have had what I thought was a muscle pull in my upper thigh. Now since it hasn’t healed and keeps showing up, I’m wondering if it’s spasticity? It happens mostly when I stand up, but also when I turn wrong. I get a sharp pain then kind of a pull. If I stand very straight and start walking, it goes away. Any thoughts appreciated. I’ve only had the wonderful “hug” so I know nothing about spasticity in the extremities. Know everyone is different.