I got food poisoning and have work tommarow?

I CANT call in sick to work, I've used up all my sick days an honestly will probably get fired. I got food poisoning last night, this morning i had HORRIBLE stomach pains, diarrhea, and i kept throwing up. I drank alot of water and went to sleep and when i woke up 6hours later i felt kinda fine. No more diarrhea, no stomach pains, and no throwing up. I have work in about 10hours an i want to make sure i can work my shift (14 hours) what can i do to get rid of it? Or is it already gone? I haven't eaten anything all day except for a little warm broth. How long does food poisoning last? Does it sound like its over? Thanks