i want to quit my job most days so I understand how you are feeling.

It will be better when your depression passes. Are there things you can do to improve your mood? Can your pdoc increase your meds? Sometimes going for a walk helps me when I'm depressed...
Don't be embarrassed by your depression, its a sickness just like any other. Do you have any sick leave due for the really bad days?
hope you are feeling better soon. it will get better...