My boss told coworkers I'm pregnant..

Alisha
I'm currently 9weeks 6 days and I've told my boss and two closest co workers I'm pregnant.. The only reason my boss knows is because she tried denying two days off for first ultrasound so I had to tell her it was special. And she guessed what it was. Fast forward a month and I was told by two different people she told them and now it's spreading like wildfire. I'm not in the safe zone to tell people AND was going to announce it with donuts or cookies for the staff! So that's ruined as well.. Sorry for the rant I guess I'm just looking for some advice on how to handle the situation..