I know that one of the symptoms of bone cancer is pain, but what is the pain like? If you have experienced this, could you tell me what it actually feels like. Is it a burning, stinging, stabbing, acheing, throbbing??? I have this constant pain in my upper arm that won't go away. It actually feels like a broken arm, but I know it is not that. Without getting too carried away here, I just want to know if it is worth looking into. I have had this for several months now and is gradually getting worst. Any thought? Thanks.