aww im sorry you are sick its no fun, i havent been feeling well for a while also.
also strep doesnt come from kissing alot of guys, it can but thats not the only way, i got strep a few years back from working at my sons preschool around the kids and i know i wasnt going out withthe kids and then turns out one of thekids moms had it so i got it from the littel irl who didnt even show signs of having it and oh my goodness i talked so funny and then lost my voice but it was painful but hopefully you will feel better soon
dont worry about work look at it this way you dont have to worry about anyone else getting sick, if you went to work someone else might have gotten sick and then they would blame you so you are doing them all a favor
rest up and hope you feel better