2 year olds??

Hi so I’ve just found out I’m pregnant and when I have the baby my daughter will be 2 years and 2 months old and can anyone tell me a bit about what children are like at this age? She’s always been physically advanced so she’s even jumping and running already so I’m more curious about how she will be intellectually at this age and how her speech and understanding will be? Has anyone had a baby while having a 2 year old? What is it like? Sorry I’m a bit scared x