Percocet has oxycodone (same opiate as OxyContin). It is more potent, highly addictive and mostly for the more serious post op pain. Generally, it is for the immediate post op recovery time. As, you heal, you are supposed to either wean off or step down to less potent opiates, like Norco or Vicodin, which contain hydrocodone. All these meds contain Tylenol. Norco has less Tylenol than Vicodin, so they are moving more toward Norco over Vicodin, because of the increasing instances of Tylenol poisoning, leading to liver failure. Tylenol is in too many OTC preparations.
They say that you cannot become addicted if you use opiates for pain, but that is nonsense. The use for pain conditions is the primary way most become addicted.
It is a difficult balancing act, because we all feel pain our own way. It is highhly subjective. Plus, we each have our own perception of what is considered acceptable discomfort. Unfortunately, the symptoms of opiate withdrawal are similar or the same as what you describe with crampng abdominal pain. So, the big question you need to ask yourself is whether your pain and spasms are due to the take-down surgery, or because your last dose of Percocet is wearing off (withdrawal). I can't tell you which it is for you. But, often people underestimate how difficult it can be to get off oxycontin. This was why I suggested asking for a lower potency of opiate and/or antispasmodics to help with your symptoms.
Your surgeon was probably doing you a favor. He just did a lousy job of explaining it, not to mention not offering alternantive treatment for your symptoms.
Jan