Well I just went to the gym and worked out for about an hour and the pain has gone away. This makes me think that maybe it was from my spinal stenosis? I found out last year that I have some slight narrowing in my cervical spine that my doctor said might pinch my nerves sometimes. I just expected that to mean the typical shooting pain down my arm which I didn't have this time. So I worked out my back and neck and now the pain has subsided for the moment. If it comes back though I will go to the doc.