Is it common to have severe emotional problems after a breast reduction (hormone imbalance)?

I am 38 years old...I am having so much trouble with my moods and overall mental state ever since my breast reduction 3 weeks ago. A total of 2.2lbs was taken. I have had a partial-hysterectomy leaving one ovary so I didn't have to have hormone therapy (I was 23) I don't know if any of that matters but if this is a hormone problem, I thought the info would help. I just don't know how to get myself under control again. Any answers and/or advice is greatly appreciated. Thank you