My first was born 4 weeks early, waters broke spontaneously, induced and eventually emergency csection. She was a monster at 8lb2 considering she was so early! I always 'knew' she would be early as she measured so far ahead and I had an enormous amount of excess fluid (polyhydramnios).

This time I don't have that 'feeling' but I won't go past 39 weeks as I'm a scheduled caesar.