Do you know for sure that you will be disfellowshipped? Or did you do something that warrants that according to the congregation?
If it's only doubts, I would suggest, as some already have, to keep them to yourself until you devise an exit plan.
Could you apply for welfare until you get on your feet?
If you can, tell us an approximate location of where you live. We can get in touch with some of the ex jw's in the UK that might know resources and agencies that will help you get a head start and get on your feet.
The reason some of us hear an alarm when money is asked is because there are been scammers in the past that have had less than sincere motives.
It's Ok to be scared and lonely, but this is only temporarary and there is light at the end of the tunnel.
Cheers,