A few days ago, I was playing floor hockey. I clashed sticks with someone at full speed, and ended up tripping over the other persons stick. I cushioned my fall by sticking my left arm behind, and falling full force on it. I had a dull pain for two days. I woke up this morning, with incredible pain. It hurt to lift my arm to brush my hair, put my arm in my coat, and wear my backpack. I can t lift it up or really move it too much without pain.It s tender, sore, and I don t know if it s worth going to a doctor for.