Ah, the great AI pain dilemma. Mine is migratory, travelling from one place to another on a constant loop around my body. I've learned to live with the constant dull chest ache and fire ants in my armpit, but I could do without the aching neck, knee, wrist, ankle, groin thing that changes from week to week.
Oncologists are well used to nut jobs because we all have valid concerns about aches and pains and those concerns can manifest themselves with varying degrees of anxiety. If in doubt, check it out. Or at least keep a record of what is going on so you are not left counting months on fingers and toes when someone finally wants to know how long you've been living with the current misery. Mxx