Thanks, I thought it might be normal but I guess not.I've had both hips replaced and the low back pain I had was before the replacements. You might want to check with your doctor.
I did therapy during my recovery but that was over a year ago, I think I should go ahead and make an appointment with the ortho.I agree with DebraMae.
One question though. Are you having physio and could the pain be from the exercise program? If you are, mention it to the physiotherapist.