Regarding therapists and support groups, have you checked the Psychology Today web site? They maintain a searchable database.
Regarding support groups, ask the leaders if they are thinking about doing groups for adults. You may be the additional one that kicks off critical mass. No doubt there are others out there that would appreciate having a support group and it may just be a matter of rounding them up. When you search the Member Directory, that might be a question to put to folks.
But, always remember this about your journey:
You aren’t the first and you won’t be the last!