All of a sudden had muscle weakness in leg and can't walk/run/drive(6mnths) for long time.cpk is 184iu/l and sr cr which used to be 0.9 is now 1.2.

You need and exam: Clearly, something has changed in you at least with respect with the strength in one limb and since it hasn't gotten any better over a long period of time you should have it looked it by a doctor. I am also concerned about the increased serum creatinine....but have you tried drinking water in generous amounts? Sometimes, a person gets a bit dehyrated and those numbers bump a bit.