Suggest Treatment For Sharp Pain In The Leg And Thigh

Hi, I'm experiencing sharp and dull pain from the top back of my left butt down the thigh, leg to the top of my left ankle. The aching is constant now. When I walk it's very uncomfortable, using the stair, going up hurts the most to where it feel like it pulling my muscles. Sitting it's sharp pain shooting through my thigh area to the top left leg muscle where it's aching. Woke me up this morning the pain was so bad.