in the hospital i work at now, a new hire (regardless of their experience) does not get pulled for 3 months after their orientation is over.
in my prior hospital, you got pulled the day you were off orientation. it was often a 2 way pull. someone replaced you from another floor, so you could be pulled to another unit.
no one likes to get pulled i suppose but your day is set by your own attitude. go with a positive one and you'll have a good day regardless. the people you are helping will be happy to see you and you'll feel at home in moments. the day is what you make of it.