I agree with the other posts and just want to say that I'm sorry that you're feeling down and I really hope you start feeling better soon :) Good luck!
Don't forget you went through major surgery and you need to give yourself time to heal. Anesthetic can do weird things to you and can stay in your system for a time. Try to relax and see your Dr if you don't start feeling better soon. I was having jittery and anxious feelings and trouble sleeping after my op and my Dr gave me some anti-anxiety meds to help me cope. It helped tremendously and now I'm only taking them at night for sleeping.
Exactly what Trudie said. Your body is just confused and trying to adjust. Hope you feel better.
Heidi
Your hormones will be erratic until your other ovary kicks in and takes over. Your body is feeling like it is starting menopause. It can take a few months for this to level out. If you find it too much do talk to your doctor about it. You will still have immense fatique until you are past the 8 week mark and that can contribute to your feelings.