I have been prescribed almost all of the antidepressants available on the market. After a long and stressful period, I found one that worked for me for a while - cymbalta. Lexapro also helped since I suffer from panic disorder also. But I don't think any of the meds can totally take away your depression. They may help with a lot of the symptoms, but your mind still thinks the same way. Plus, with all of the added stressors in your life, it's no wonder that you feel overwhelmed. The meds can help with your coping, but when there's so much going on, your brain can't process it all. I agree that you should talk to your doctor about how you're feeling. He's the one that knows what's going on up there chemically.
It sounds like you need an outlet, just to vent. Have you tried keeping a journal? I have done that for years and it has helped me get through things I thought I would never recover from. It's also a good way to say things to people that you want to say - may they be hurtful, inappropriate, whatever - without them ever actually seeing it. That may help out a lot, it did for me. But everyone's different. I just feel like putting pen to paper is just as theraputic as talking to a counselor. Everything you say won't be analyzed, but will get off your shoulders. Then you could even take your journal to your counselor and point out some of the things they may be able to help with. Best of luck to you in your stressful time!