Preggo bartender that want to hide her pregnancy

So just found out I’m pregnant but I don’t want everyone to know it because I have had one miscarriage in my past early on in the pregnancy. How do I go around fake drinking shots or beer when offered by coworkers or customers. Ps the owner lets us have a few drink on the job as long as it does not affect the bottom line… so I have drank on the job before this.. so to out of know where stop is a big red flag