I've been having really bad shoulder and neck pain?

for about a month now. i thought that maybe i had slept on it wrong or something but it just wont go away. so i've been using icy hot on it. tonight i noticed this really sharp bone on the corner of my shoulder. my other shoulder doesnt have this. and tonight is when i realized that about a month ago was when i... show more for about a month now. i thought that maybe i had slept on it wrong or something but it just wont go away. so i've been using icy hot on it. tonight i noticed this really sharp bone on the corner of my shoulder. my other shoulder doesnt have this. and tonight is when i realized that about a month ago was when i started using a punching bag. i now know that i probably did something to it from that. but what would cause my bone to stick out like that? could it have always been like that and i just now noticed it? also when i move my shoulder around in circles it like grinds and pops. please help!
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