I'm kind of freaking out

So I gave my daughter my phone so she could watch videos as I drive. It's the only way to keep her calm. Well, I noticed she was chewing on my phone. I grabbed it from her and saw that there were pieces of my screen protector missing. I checked her and there were tiny pieces of glass under her chin. I checked her mouth for any signs of cuts and she seemed fine, but I can't rule out that she may have swallowed some. She's not acting as if she's in any kind of pain and she's eating normally, but I'm still a little nervous. What should I do?