is it a must to feed my lo cereal? my lo is 9 mths and I haven't given her any cereal. only fruits, vegetables, pasta. am I missing out any nutrients if I don't give her cereal?

I don't think your baby is missing out. I've lots of friends who have never given their babies rice cereal because it's not really a staple in their home countries (Sweden, Norway). Instead their babies are fed fruit and veggies purees etc. As long as the foods you are feeding baby is nutritious, healthy, age appropriate and easy for baby to eat, I reckon there isn't an actual need for the traditional rice cereals.