What a scare for you Skorpy, don't you hate it when you hear those words!

About the fundal height, really, it's very inaccurate of basing gestation from it - the fundal height depends on many things, for example baby's position, baby's length, the amount of fluid you have etc... so it's not the most accurate indicator of anything. Remember that your body may give signals the the pregnancy is more advanced or baby may be bigger but that doesn't mean developmentally that he's more mature... trust that your body and your baby know what they are doing.