Encore,
Welcome to the site. Depression is an ugly beast, and when you are ABDL and have depression, I think treating the depression is sometimes harder, because the shame that many of us feel feeds the depression, which makes us feel more shame, which is like liquid sugar for feeding the depression. And it goes on and on.
If you haven't done so already, I recommend you find somebody to talk to, preferably a counselor, or psychologist, or psychiatrist. Many of us with depression (and other mental illnesses) need a combined approach of medication and behavior modification through therapy. I'm a huge fan of both my meds, and the cognitive behavioral therapy strategy that my therapist uses. I function at a more-or-less "normal" level because of the combination of medication and continual counseling.
Going in can be scary. I got to the point that I was nearly ready to end my life before I went in to see a psychiatrist, because of the shame I felt. I implore you to not wait that long.
I hope that you can find the right help for your situation. Not having the privacy to explore your ABDL side can be frustrating, and I think it is a problem that many on this site share. I hope they can give you some good advice on how to handle that specific situation.
In short: welcome. I think you are in the right place. I hope we can help. If your depression is serious, please consider getting help. As you get more involved at ADISC, I hope you can find the support you are looking for as well.