Still driving?

Emma
I'm 39+5 and showing no signs of labour. FTM too, so kind of expecting to go late. I'm still working but not too much and only because I want to be. If I have to be walking and moving and all sorts to get this baby out I'd rather do it at work than just pace my living room. The only concern I have I guess is whether I should still be driving. I feel totally fine. When did everyone stop and why?