Hi Leeriesan...welcome to the forums (from another newbie)
I'm sure most of us can relate to the majority of what you're going through, so if it helps any to know that you're not alone, you've come to the right place. Have you tried seeing a therapist for your depression, or even reading up on the various things that can be done to alleviate it?
I agree that when I'm depressed, the pain is much worse, and it's just a downward spiral domino affect; which is why I try to first and foremost do things to help my depression. I find that meditation works for me. It was hard to learn at first, but once I did, it's quite easy. The first time I tried meditation, I just sat still in a nice comfy chair, eyes closed, tried very hard to clear my mind of pain, and my surroundings by 'going to the beach' so to speak. (the beach calms me tremendously and being that I can't drive there, I can at least go in my mind!) Once I had myself at the beach, I would feel the warm sand under my toes, the warm breeze on my face, the calming affects of the sound of the waves, and yes, I could even watch the seagulls flying overhead. I would stay 'at the beach' for as long as possible and then slowly bring myself back to reality. Believe it or not, it made me feel much calmer and I could then think with a clear mind realizing that I have power over my depression, and therefore over my pain. (well, I found that this helped the depression "much" more than the pain, but in all honesty it did ease the pain somewhat.) Until this day, I'm totally amazed at how the mind is such a powerful tool!!
If my home is too 'busy' for me to meditate then I do my best to be around something that brings me joy. This can include calling a friend, being with my grandchild, snuggling up with one of my pets, and yes, sometimes going on line looking at the various places in the world that I would someday like to visit! At best, when your depressed, in total pain, and extremely exhausted you don't really feel like doing anything to help yourself, but I find that it is at that time that it's the most important to try. Of course I don't always succeed but I do always try.
Anyway, I hope this helps you a little bit. Sometimes learning how others cope gives us a tid bit of help. You've gone so far in your studies, it would be a real bummer to have Fibro take that away from you. Keep up your spirits, and good luck to you!