C.A.
I was worried too about my daughter mainly because we taught her sign language and at 20 months she still wasn't using any words. We thought because of signs she would never talk, but she finally started out of the blue one day at 21 months. She's now 22 months and starting to form sentences! I'm a member of a mommy group and the mom's all told me that it will just happen one day and then in no time they will be holding conversations and now I see what they were saying. So, give it time and try not to panic. Most of the kids in our group didn't talk until around 20 months either so maybe she will start around then too. :)