Hey, those worked!
You know, the funny thing about my mare's vulva is that she looked "relaxed" pretty consistently about a week ago, and now she's almost always puckered up again. So I can only guess her hormones are flucuating or something.
I wish I could comment on how far along your girl looks based on the photos, but I am expecting my first foal too. So I better not venture a guess. My girl keeps me guessing enough as it is!
But here is a website I found with really good photos of udders and milk and vulvas and such for comparison. It is actually the only place I have found that showed me the milk color. And I realized after viewing the pictures that my mare's udder isn't nearly as ready as it should be. So I have relaxed my foal watching a bit as a result. Foaling
For instance, look at how full this mare looks: http://www.yellowhouseranch.com/Dallas330days%20008.jpg
I don't think either of our mares are as full as that.
Any of you experienced folks, do they all get that full before they foal?