The gush of warm amniotic fluid is what got me - your birthing experience sounds very similar to mine, man i could almost feel what seemed gallons of fluid trickling down my leg, as i read your post...... (although, i didnt make it to the labour ward, just the emergency). My knickers and $69.95 maternity pumpkin patch skirt were cut off with scissors - no time to be a lady!.
As the Drs suggested to me, should there be a #4 for you, i suggest you and DH camp outside the birthing unit, at least a few days prior to your EDD !!!!
Enjoy your third beautiful child