Feeling Rejected By Everyone

My parents have recently had health issues which have made me very anxious. We had a family friend help us but now this person says she has lots of personal problems of her own and cannot help us now. I feel rejected and feel alone and also scared incase I lose any of my parents soon.  I am an only child. It can be scary for an Autistic person things like this when you have not got much of a support network.  I wondering if anyone knows any support workers or advocates I could get to help me and support me?  I need long time support not just a few weeks. It can be a lonely world