I began to feel it on Tuesday, on Wednesday, I struggled to lift my right leg into the car, now it's diminishing. Pain seemed to be in my right hip, I could not locate any muscle pain in any of the muscles. I was fine walking, just struggling due to the pain, to lift or take the weight of my leg, on my hip. On Wednesday, getting in the car, I had to lift the leg at the knee with my arms. What is/was it?