I’m scared and feel so alone

So we lost my mum in May last year after a relatively brief but drastic decline in health, and although it was never found or confirmed, the likely cause was cancer.  
my dad has had a multitude of heath problems for years (only 1 kidney after renal cancer 17 years ago, Parkinson’s, and AF which he has a pacemaker for).  After my divorce and subsequent sale of my home, I moved in with my dad in Feb 24 to help look after him (with my 2 teen daughters).  Long story short, his mobility and strength decreased dramatically over a couple of weeks, with frequent falls he was unable to get himself up from.  He was finally admitted to hospital just over a week ago (after a battle to get him there!) and we have learned that he has cancerous lesions in his spine which have caused multiple fractures, and a mass on his spine at the base of his neck which is compressing the nerves.  We area waiting for a biopsy on Monday to see if there is a primary tumour elsewhere, and to get a better idea of a prognosis. 
When i went to visit today, he was delirious and although he knew I was his daughter, he told me I had ruined his life and his marriage and was scum.  I know it’s not him, and of course he doesn’t mean it, but I was not prepared for it and the nurses are trying to find out why he has suddenly deteriorated in this way.  I know it’s not him, but being told he hates me and to f*ck off and never come back was heartbreaking. 
Im terrified and can’t bear seeing him like that - I’m on my own and feel like I have no one to really talk to about things, and I have to be strong for my daughters, but I’m struggling to hold everything together.  
sorry for the long post, but just needed to get it out.