I'm having pain in my biceps and lower shoulder muscles when I stretch my arm out wide.I was in a car accident 3 months ago and they took x-rays and nothing was broken.they said it was just bruised.it's been sore especially when I move it out wide.I reached around in my backseat to grab something the other day and it felt like someone was ripping my muscles off my arm.is feel it down to the bone from my lower shoulder to my elbow. I can deal with some pain but this is something more.should I go back to a doctor with it can't afford or just be careful with it and let it heal on its own?