I hope you are feeling better. I have had chronic pain for years and have been on all kinds of meds. I am currently on Percocet and Oxycodone (same as Percocet - only no tylenol in it). They keep trying to put me on Oxycontin and I keep trying, but it makes me so naseous and tired, that I stop taking it. I don't know why I can't tolerate it, but I cannot. I think I should put my foot down with my pain management doctor and just tell her I do not want to even try it anymore.
I had major surgery 2 weeks ago, and they gave me Promethazine (generic for Phenergan) and it has worked amazingly well for naseua. Maybe it will work for you. I also have ulcers and take Nexium for that.
Here's to wishing you good health and well being,