every ache and pain

Every day is a new ache or pain.  Is it real?  Is it more mental than physical?  Does it mean anything? Do I tell the doctor?  At what point does it become real, meaningful, worth asking about?  It is all part of the vast unknown of cancer.  Instead I just wait every day, to see if it goes away (which it usually does).  And wait some more, and more.  Until science develops enough to keep me alive longer.