It is true, we all have different tolerances to pain. What may be excruciating for one person, may feel uncomfortable for the next person and there is no way to gauge how you will react if you have never had surgery.
It is okay to feel uncomfortable and you will survive it. The human body has processes in place to cope with discomfort, along with medications you will receive. Most of us are up walking mere hours after surgery. Sure we aren’t skipping for joy, but we are able to move, use the restroom, etc.