I used mine for weeks with my first 2
kids and they were both overdue! They are very comfortable and help with positioning baby
for birth, I've just started to think about getting one as everything is getting crushed now! I used to rock from side to side on it, and I would sometimes kneel on the floor and balance in it with my arms in an all fours position, sometimes that was really comfy and apparently helps with baby getting into the right position for delivery.