Hi Janice,
Waterbirth is relatively new in sg. Basically, instead of lying on your back with your legs prop up, you get to be in a tub of warm water throughout your labour and delivery.
I opt for it as I have back problem and don't think the traditional or common way of delivery is good for my back. Worry it stress by back or hurt it even more.
On top of that, I scared of cold. So warm water is good to calm me down. According to research, women who goes through waterbirth, generally experience shorter labour and most of them don't need the gynae to snip the vaginal opening as water promotes elasticity...
Will let you mummies know how my delivery went once I pop! <^_^>