Should I get my leg looked at?

You really should get it looked at. A doctor will be able to tell you whether it is bad or not. You may have dislocated it, or pulled a muscle or something. xD I'm not a doctor, but I DO know something. There is nothing to fear from an x-ray or an MRI. My little sister did a CT scan, it didn't hurt. Neither will an MRI. I've had to get an x-ray when I had pneumonia. It didn't hurt at all, and it's interesting to get to see what's inside your body! xD