Oddly enough, I've felt that I have dilated back and forth a bit in the last week (just a guess)! Between SPD (and this pesky loose ligament) and the baby bouncing on my cervix (midwife can feel the baby is all the way down already) from time to time, it's possible that I have. Apparently this is normal enough to happen, too
Feathertop, in your case you're on meds and had that scare a few weeks ago, so it seems like a clinical reason to check on things - glad all is well!