My first was 40 weeks + 3 days, my second was 40 weeks + 4 days.
With my daughter, she was 12 days early. Im hoping I have this baby early too. :)
But from mid-pregnancy with #2 I always had a feeling she would be early. Trust your instincts too :)
First was 41 weeks. Second was 35 weeks. It all depends on the pregnancy & im pretty sure there is no definate answer. The second is usually a shorter labour though.