I don't know a specific name or URL, but I do know that there are several such groups, on-line and face-to-face. I know of them only indirectly as a colleague of mine, Lynda Layne, did research on them. If you don't find a group via Google, you could try looking up some of Lynda's work via a library or Google Scholar. Also, your GP or OB/GYN might know of a counseling group, and might be able to offer some help in terms of medical advice. Finding out what caused the loss of this pregnancy might help you have a better outcome next time, and your doctor or midwife might also offer you closer follow-up if you try again, even just to deal with fear of another loss. Grief is a tough thing to go through alone. I wish you the very best!