Depression after breast augmentation surgery? Is it normal to have mood swings after the surgery?

I had also suffered from depression and anxiety. I had my surgery last Wednesday and came back to work as a hairdresser this past Tuesday. The pain is awful but I stay and push through my 10 hour days. I'm feeling more depressed and anxious than normal though. Should I still be in a lot of pain where the incisions are?Am I able to take xanax on top of the pain meds I have been given? Thank you in advance!