Jayne,
Welcome to the forum! Carl has said almost everything I would so re-read his message! Only kiddding!
I have listed some web sites for you to investigate for some assistance.
I would also like to suggest that a "Book Club" usually works for shy people as a way
to make friends and is a easy first step out the door type thing. If you go to your local book store or Barnes and Noble or their website you can find local clubs.
http://www.needymeds.org
www.moodgym.anu.edu.au./welcome
It does sound like you are becoming or are depressed, however you can do something about
it. If nothing else check out the moodgym to start.
Keep posting here, we support and listen to each other the best we can. You have done the hardest part already, by reaching out!
Peace
Trina