Celebrex after decompression/fusion surgery?

I had spinal decompression/fusion surgery 4 weeks ago. My leg pain is mostly resolved. I have returned to most of my non-strenuous daily activities and am walking an average of 2500-3000 steps per day. However, I also have hip and neck pain that was previously controlled by Celebrex, which I haven't been taking since a week before surgery. My surgeon's PA says it's OK to start the Celebrex again, but I read on many reputable medical websites (NOT SOCIAL MEDIA) that Celebrex shouldn't be taken for 3 months after this type of surgery because it can hamper bone fusion. Does anyone have insight into this issue?