Suggest Treatment For Chronic Substantial Pain In Legs

hello, since march 2014 i have been having chronic substantial pain in my legs, enough to have to take a half of an oxicodone at times........my ck level has consistently been elevated in the 300's......drs. arent too concerned, since the ck isn't VERY elevated (as in the 1000's). my immune system is very low & I am taking supplements to boost it........I just had a follow-up series of blood tests , and this time my ck is 493 (1st time in the 400's).......my muscles tire very easily.....when I go up stairs, for example.......I have been going to a physical therapist because I am very tight in my muscles and have very limited range of motion.......the PT says I have hypertone of my muscles........is this early signs of a muscle disease? I have been diagnosed with a current lyme infection and anaplasmosis......could all this muscle/joint pain with an increased CK level be from the 2 tick borne illnesses, or do you suspect that something else is causing these symptoms? thank you