I had to take a sick day today

I hate using sick days, but I don't want people at work spreading germs either. I am supervisor over 7 girls and I always tell them if they are sick stay home. I would rather work short staffed as keep spreading germs around.
I have been sick for a month of just general all over aching, Sunday afternoon it felt like an elephant was sitting on my chest. I slept all day yesterday aching, chilling and coughing. Went to the dr today and it is a sinus infection. I thought I had the flu from the way I feel.