Hiding Pregnancy at Work

Ke
Seriously I'm peeling every 20-30 minutes. Everything I'm eating is either plain bland toast/crackers or something with ginger. And I'm constantly yawning.  I'm only 5 weeks!! I don't know how I'm going to make it another 7 weeks of these symptoms progressing and getting worse without people at work catching on!  Anyone not a first time mommy who can give me advice on concealing a pregnancy at a full time office job!?