ok this may sound completely mad, but i have been going on long walks throughout my pregnancy, and tried to avoid going places in a car unless i really need to. i am also staying at work until 37 weeks. the reason for this is that when i was pregnant with my son i had no job and just became a couch potato. he was born 2 weeks late! am i bonkers to think the two things are related or am i less likely to go over due if i keep up the walking?