Hospital Stay?

How often do they take baby from you once you've delivered? Going into my third trimester with my first pregnancy and I have MAJOR anxiety, and I already feel anxious about my baby being away after delivering her. How often do they keep baby from you? Are they with you 24/7 in the room? Do they force keep babies in the nursery still? Do they let you keep them in the room and with you if you want or do they already leave them with you most of the time?