Job and bed rest

My doctor put me on bed rest from 13-16 weeks because I was fainting a lot and I had high blood pressure. My problem is my job won’t approve my leave of absence for it because they day I don’t have enough time accumulated to leave. I have a doctors note, but they said it’s like having the flu and it’s not a continuous leave only a week before I accumulate enough point to terminate me. Every day I miss I get 1 point. I now have like 13.🙄 what should I do?