Hi UndertheCedarTree
Many years ago, I was in hospital for a long time (MH issues). I can remember feeling exactly the same. When I first went into hospital, I hated it. Then I get used to the routine and made lots of friends, Finally, was was so scared of leaving.
However, I dared not voice my fears. Everyone was so positive, but I just felt terrified.
One of the things that scared me was loneliness or rather, being alone. I had people around me for such a long time. There was a camaraderie among patients because we were all in this together (I have not known such intense friendship since) and I was leaving that behind to go to an empty flat.
I was also frightened that I would 'slip back' to my old patterns of behaviour because they were a coping mechanism.
However, although things were difficult, there was support. Like you, I had a social worker and she came to see me. My family were also hugely supportive. It was hard, it was lonely, but human beings adapt amazingly quickly.
So, well done for talking about this. It will be strange and I should imagine there will be a transition plan in place e.g. a few days leave, then perhaps a week or two before the final discharge. If not, ask your SW about this.
One thing that I can remember vividly is going to places that I had not been to for such a long time and feeling a sort of flash back to before I went into hospital. This came as a shock to me, so there may be some feelings that take you by surprise.
However, I am sure, with your family, with transition and with the right sort of support, you will get through this change.