I had my last of 4 AC treatments on Tues.,September 16. On Sept 25 & 26 (Thurs & Fri) I had neupogen shots to recover my WBC. The following Tues I developed hip and back pain. It is now a week past that point and the pain is worse. Advil, aleve do not seem to help much. I will try vioxx also. But is this a common response to the neupogen? If it was the neupogen, wouldn't the pain response have been sooner? I'll also add that I have been very active throughout chemo and playing tennis, walking and eliptical machine workouts. My pain seems to improve when I try to be active. This pain does not seem to be muscular. I had 4 sequential shots of neupogen my 3rd round of AC and did not have this amount of pain. And my WBC was lower the 3rd round than the 4th. Also, I start Taxotere next Tuesday. I understand that the Taxotere can lower WBC even worse than AC. Also, T has some of it's own achiness side affects. Does this mean that my response to neupogen will become worse? Does neulasta have less pain side affects? Thanks for any help!