Can someone talk me off a ledge right now?

I hate calling out of work because I feel really bad leaving my coworkers pick up my slack. Ive been working at the same cafe/bakery for a year and I have never called out sick the day of. But this morning I woke up feeling off — my nose and throat felt weird and I felt like I kind of had chills and I was really tired last night. As I wrote this snot just spilled down my nostril (gross, I know). Usually I’d tell myself to get it together and just go to work, but we’re in a pandemic. The place I work is doing almost nothing to stop the spread except our tables are outside and people have to wear masks (but this doesn’t stop my coworkers from taking their masks off to eat baked goods 😒). I don’t go anywhere except work and my house, but I do live with my two sisters who sometimes go places they probably shouldn’t. Anyway, this morning I called out sick for the first time and explained the situation to my manager, saying it was just a precaution and I was gonna get a test ASAP. Other people call out pretty frequently but I’m not one of those. She seemed disappointed even though I’m staying home to keep everyone safe. Tell me I’m not being silly to absolve my guilt! What’s one day of being slightly short staffed compared to the possibility of getting the whole bakery sick?! I think I’m imagining her being frustrated but I still feel bad about staying home when I was expected to work. Sorry for ranting I just know that I’ll stay home all day feeling bad. I have a Covid test scheduled for Sunday morning, and that will be my first test.