Shoulder Problems?!

Shoulder Problems?

I'm a swimmer, I swim 6 days a week on a competetive swim team. I mostly swim 100 fly, 100 breast, and 100 free. Latley, I have had weird shoulder pain, which only occurrs when I am laying down on my stomach resting on my arms, or sitting at a desk, table, ect, when I'm slouching or resting my elbow on the table. I'm conserned that the pain I'm experience is caused by the swimming, but it doesnt seem to be anything I can find online. The pain is in my right shoulder in the front, and I think it might be an issue with the rotater cuff or something being pinched. I dont need people to tell me to go to the docter, I just want to know if anyone has experienced anything like this, or know anything about it. Thanks.
(p.s. I'm only 14, so its worrying me with my age, and shoulder problems.)

1 week ago
The pain is like a shooting pain, or the same feeling when blood flow stops, but blood is still flowing to my shoulder...

Diagnosis: Pinched Nerve
Cure: Time