When I raise my leg up again it hurts. My left testicle is also swollen. The pain is not constant. Chappens ever so often. Why?

Here are some ... You need a timely comprehensive evaluation so to define what and where the origin of pain, i.e., from the disorders of local tissues / organs or from the disorders of far sites such as from muscles, joints, or nerves or in combination. This can be done by analyzing detailed sequence of events (onset, degree, duration, interval, evolution, & progress of the pain & its related Sx over time + exam +.