Because I can’t yell at my boss 😅

I told my boss when I started that I was diagnosed with a chronic pain disorder, and she told me not to tell anyone else? First of all, what kind of response is that? I told you to be professional because I may need to call off soon due to pain because of the weather change, and it’d be great if you knew that BEFOREHAND. Secondly, if I decide to tell someone about my health is my business and has nothing to do with you, thanks