Turning 26 next month when do I get kicked off my mom's insurance?

Hello, I started a new job two weeks ago, but I won’t get health insurance until I have been there for 90 days. My question is, will I be kicked off my mom’s health insurance as soon as I turn 26, or is there a grace period? I live in RI, and my mom’s insurance is Blue Cross Blue Shield through her job. I am worried about having a month without insurance because my medications are expensive.

I’m sorry, you just have to get your insurance once you turn 26. The Affordable Care Act (ACA) is strict about that.
I also think Blue Cross Blue Shield would not want to flaunt such regulations because they could get their business scrutinized by NAIC.

It will end on the last day of the month you turn 26