Hello & Welcome, Ironic_endings. Would it at least be possible to get a general health checkup with a primary care doctor? Sometimes depression symptoms overlap with those of other problems such as thyroid disorders, anemia, etc.

Many self-help approaches to depression exist and lots of Web resources.

Doc John’s Where to Get Help for Depression – includes some self-help ideas
MoodGYM – Cognitive Behavior Therapy from the Australian National University
Cognitive Behaviour Therapy Self Help Resources – Get Self Help UK
Free Downloadable Therapy Worksheets & CBT Tools – Get Self Help UK
Online Self-Help Book for Mental Health & Illness – MentalHelp.net
Dealing with Depression: Self-Help & Coping Tips – HelpGuide.org
Depressed? Try This One Simple Tip by Bobbi Emel, MFT
21 Depression Tips from the DIY Couturier

Some sort of support group may be available in your location:

Depression and Bipolar Support Alliance (DBSA) Home Page
DBSA Support Groups and Chapters