On my own :-(

I'm on my own this weekend and not feeling too brill. I know I've got to get used to being on my own as my youngest daughter will be off to uni next year. I just feel so lonely and am so used to being a busy Mum that now my children have grown up I don't know who I am any more. What do I do and where do I go when I'm on my own? I can't just walk in somewhere on my own.
I'm struggling for money at the moment and don't have any spare cash for me - don't get paid till next week and don't know how I'm going to buy food till then.
I just feel like crying tonight. I'm just a sad, ugly, lonely person and its crap. It's my daughters 22nd birthday tomorrow and for the first time ever she is away and I won't see her but its her life and I have to let her fly.
Wallowing in self pity will not help me and I've got to try and keep smiling but it's not easy. I wish I had a zopiclone so I can just knock myself out and sleep till Monday.