Parents Place
I found this website to have a wonderful support group, also it has many stories, and helpful ways to "move on"!
Silent Grief
This website has terrific chat boards and very emotional personal stories.
Baby Center - Bereaved Teen Parents
This website will let you interact with others and hear what they went through when they miscarried. It is one of the very few, which focus directly on Teen Miscarriage!
Angel Babies - Forever Land
http://www.angel4ever.com
This site is dedicated to all those who have lost a child. It has a wonderful memorial wall where you can add your child's name and it also has a great place to talk with other griefing parents!