Coworkers seem to have the plague, I’m pregnant, help!!

So they don’t really have the plague but a few coworkers are contagious and hacking up their lungs. I’m early in my pregnancy and paranoid. My immune system seems to be strong however I do know that when you’re pregnant it can make it weaker. Only my team manager and a few others know I’m pregnant (I’m 6 weeks). Would it be dramatic of me to come in with a hospital mask 😷? I just don’t want to take any risks. We have a fair amount of sick days but people don’t seem to like to take them when ill. Any advice on how to keep safe will help!!