What Causes Constant Pain In Scapula And Arm With Burning Sensation In Rib?

I have constant ache in the scapula area, in the arm area ,a burning sensation in the rib, sometimes a dull nagging ache. There's always a heaviness in the right side. i tried getting as much information on the symtons that i am having and now i am suspecting that it may be pancoat cancer. I want to know what to do next?