LSH Almost a week after my surgery and I feel awful.

Hi, I'm Becky. I had a LSH and BSO. The day of the surgery I was given an anti-nausea patch. Something new for me since I've had 4 surgeries from June 2011 to March 2012 for Breast Cancer. I am fortunate to have great care from the nurses, doctors, surgeons, etc. The surgery was 3 1/2 hrs long and it went well. I left that afternoon with my meds and didn't feel too bad. The following day I took off my patch because I was beginning to have blurry vision. That afternoon I felt queasy, migraine, nausea, and an overall feeling of malaise. I've been on my pain med and I'm beginning to taper off of them. I've been careful with what I eat...keeping in simple and drinking alot of liquids. It's been almost a week since my surgery and I don't feel well. I'm still able to eat and I'm keeping myself hydrated but I can't seem to get rid of this feeling I have of being sick. I'm tired, want to sleep, get headaches, nausea.
Shouldn't I be feeling better? Is it because my ovaries were removed and my body is out of whack? Or was it the patch?
Any advise or suggestions would be appreciated. Thank you for being here for me. I love this forum and it has been a tremendous support.