Just so Tired

I've got two surgeries scheduled over the next two months for my eye.  My father has had 4 surgeries in the last 4 months for a foot problem.  Now he needs surgery on his arm.  I've been there for him for all of the surgeries, and asked only that he has the one coming up on a Tuesday or Wednesday in two weeks.  The doctor said he wouldn't need the surgery for three weeks so this did not appear to be a problem. 
I was wrong.
My father, knowing that I have to work, decided to have the surgery next week.  He's refused to change the date.  He knows that I live alone(recently widowed) but he wants to get me fired so he can have control over me.  He's not feeble, but has always been a controling man who used to beat my mother.  He once threatened to kill my husband, so I'm talking high order control.  I can not live with him, but I love him and would like to help him.  But if I lose my job, my life is over as I know it.  He can and will destroy me.
So, I'm here just venting.  If I take that much time off, I will have problems at my job.  If I don't work, I don't get paid.  I have that sort of job.
I'm not going to the surgery.  When I asked him to please change it, he screamed at me and said that I was selfish and hung up on me. 
I'm so  damn tired of this.  What with losing my husband and him torturing me for a year(I actually moved in there to help him), I'm just at my wits end.  He's left me 15,000 dollars in debt because I gave him the money.  Now, I'm barely making ends meet and he's trying to get me fired. 
Just so tired.