What should I do about a dislocated hip?

See a physician. A truly dislocated hip is a surgical emergency and requires admission to a hospital.
Dislocated hip. This is an orthopedic emergency that requires immediate attention and relocation by an orthopedic surgeon.
Have it evaluated. A dislocated hip in a young person like yourself is bad news. It needs to be reduced immediately to restore the blood supply to the ball of the hip joint. Then you need close follow up in case that blood supply is damaged so that you can be treated.