Do you still go to work even if you're sick?

Actually yes, but I need to stop doing that. We're still not completely done with Covid, so it's best to think of my coworker's health as much as mine.
I've actually been going to work sick the last few days, but it didn't hit me until last night that I might have Covid. 🤧
I have a Doctors appointment tomorrow, so I'll get tested before I go back to work on Friday.