How do I even call in? Help

I have felt like shit since this morning and I still went to work and worked through it and felt better but then left 30 minutes early because I kept having bad diarrhea. I got home and passed out because I felt so bad. I probably seriously need to rest, and see a doctor. I have diarrhea and now I’m throwing up. I woke up puking. At my job, I’m on my feet all day for 8-9 hours. I’m sweating, I have to be all over the place moving quick.

In this state I can’t do that. But, I am the only person there with my manager until 4 pm doing 4 peoples jobs. He’s doing two jobs and I’m doing two jobs. We are currently short staffed for the mornings. It would be really shitty to call in because then he’d have to run that place all by himself and I really need to call in. I need to take care of myself man. I’ll wake up super early and give him like 4 hours advanced notice. I just don’t know how to do this and I’m really upset and having anxiety over it. I have never called in, ever. If I’m sick with like throat and nose stuff I work through it. But I can’t be working while I’m spewing from both ends and I haven’t had a stomach bug in over a year.

I’m currently fucking dying and having anxiety on top of it. Advice would be appreciated especially if you’ve ever been in a similar situation or if you’re someone’s boss and short staffed, what would you want them to do? If we weren’t short staffed it wouldn’t matter id just call in. But I don’t want to put my boss in a REALLY shitty situation.