Call and make the appointment today!!! Don't wait. Bet you throw alot all the time. That is a lot of stress on any arm, especially a younger one. My 13 year old experienced pain for the first time. Fortunately, he stopped and has been going to physical therapy for several weeks and now on a modified throwing program. It is not fun to have to take time off, but it is even less fun to be out an entire season or even longer. Any coach that is worth anything will understand you need some time to heal. If you are good enough for varsity as a freshman, he certainly won't want his "star" injured when he is a junior or senior. Call now!!