My boss told my coworker that I am pregnant 😡

I am pissed. I work at a job where we occasionally have to do certain tasks that are a hazard during pregnancy. My boss just shifts the task to other people when someone is pregnant so they can avoid that task and it's no big deal. But because of this, I had to tell my boss early on that I was pregnant (I was only 6 weeks) so that she wouldn't schedule me that specific task. I specifically told her that I did not want anyone else to know because I was still very early and that I would tell people once I made it past the first trimester. Well... she couldn't keep her big mouth shut and told a coworker. Luckily my coworker told me before he spread it around and promised he wouldn't say anything to anyone else. But now who knows who else my boss will tell or has already told. This isn't her news to tell and I am pissed 🤬