I'm having surgery and am worried about handling post-op pain. I am currently taking 40mg oxycontin three times a day with percocet for BT pain. I'm finding any extra at this point doesn't seem to help enough to make it worth it. It makes me feel sick to my stomache and extremely depressed and groggy. If I'm taking all I can handle now, what do I do for post-op pain? I'm terrified of being in pain with no hope of help.