Hiding pregnancy tips

I’m trying my best to hide my pregnancy from my coworkers. I work at 9-1-1 Dispatch where i spend 12 hours a night with the same 4 people. I’ve been having to pee every 20 minutes & they’ve been giving me a hard time about it so I blame the frequent bathroom trips on UTI’s.

Not to mention my bloated stomach makes me look 5 months pregnant.

But I’m almost 10 weeks & I’m sure they are finding it hard to believe I’ve had a UTI for that long 🙈

Any tips?