My baby is 9month old she doesn't stood up and not crawling.

A. thank you for reaching out to us with this question please do not worry about this as long as your baby is getting sufficient tummy time and is making progress don't worry because some babies don't grow at all interested to work directly and some babies just start crawling much later like 10 or 11 months then put the situations are normal to bring it up with a pediatrician in your next vaccination appointment