Yes, your fear is normal. I panicked so badly the month before surgery I gained 10 pounds on pure sugar! Success getting through an ortho surgery requires great family support, a responsive family physician (because the surgeon will be nowhere around when you need help afterward, trust me), and a therapist who listens and doesn't bully. The good news is that a hip replacement is said to be much less torture than a knee replacement. So lean on your coach. You really will need the coach to help you get the right meds at the right time after surgery, to get you to and from and through the therapy, to hug you when you freak out and melt down at various points, to remember everything all the professionals tell you when you're stoked up on pain meds and can't remember your own name, to fill your water bottle in the hospital, to smuggle stuff you need into the hospital, and to reassure you that you are not losing your mind. Your coach is critical to getting you home safely and into your bed and then waiting on you hand and foot for a long time. I wish you the best of luck and a safe, speedy recovery.