skmama - please try not to worry - your baby will be born when it's ready. I know how you feel, really. DD2 was born 42w5d with no meconium, no problems, no nothing. DD3 did have meconium, but she was born completely perfectly healthy at 43w1d. Meconium by itself is not a reason to worry. ETA: what I meant to say is that "fear of meconium" is unsubstantiated. As Amie said, meconium doesn't appear just because you're post-date. I'm probably still not saying it clearly, but you shouldn't worry about meconium - and at the same time, even if there "is" meconium, you shouldn't be afraid of it.
My midwife has attended lots of 43 week births, lots of births with meconium, and she's never seen meconium aspiration in over 1600 babies. Not saying it *can't* happen, just that it's statistically improbable. Just being post-date doesn't mean meconium nor does it mean bad things will happen.