What would cause my right hip to hurt? It is worse when I stand for long periods of time, and it hurts worse to put weight on that leg?

Need an exam. Since you're relatively young i would think osteoarthritis would be low likelihood most likely causes might include trochanteric bursitis, iliotibial band pain, and possible labral damage in the hip i would suggest an orthopedic exam with xrays. You may need an MRI also.