Actually you should've just believed your husband instead of doubting him, or following Dr. Swapnendu sekhar ghosh's generic advice. If he had been having issues ACTUALLY ASSOCIATED with his surgery then yes, definitely follow Dr. Swapnendu's advice. But since your husband had been taking Percocet, he obviously had developed a slight opiate-dependence. Oxycodone(the active ingredient in Percocet) is a strong opioid
and is strongly associated with addiction and physical dependence. Persistent diarrhea
, enlarged pupils, runny nose/eyes, yawning, and general irritability are the initial, most-prevalent symptoms of physical opiate addiction
. If he just completely stopped a consistent dose of Percocet after 3 weeks of use it is obvious he was experiencing opiate withdrawal syndrome.