16 month old doesn’t talk

My daughter is 16 months old this month & doesn’t say not one single word. OCCASIONALLY she will say “ta-ta” which is her way of saying thank you, but that’s very rare too.

It’s hard for me not to worry because her doctor wants her saying 10 words by 18 months....

I talk to her like I would talk to anyone all day long, and we read TONS of books.