Daughter just turned 13 and has been pitching for a few years now. Throws in mid-50s. Usually throws about 45 mins, twice a week in off-season. She started having pain recently in the front part of her shoulder. Said when she rotates it feels like a cracking feeling in the front. I asked her how bad it hurts on a scale of 1-10; she said 6. Is shoulder pain common for most pitchers - what does everyone do to figure out what exactly is wrong and how to make it better? I'd appreciate some input.