I've also got a cervix question. I had two normal pregnancies ending at 39+ weeks with planned cesarians, then last year a D&E for a missed miscarriage (first trimester), and am currently 20 weeks pregnant. Cervix got measured transabdominally at my ultrasound a few days ago, and there were multiple measurements of 3.2 cm and 1 at 2.95. This is a university clinic, and they did NOT follow up with a TVUS, nor did the doc mention any problems whatsoever, just mentioned it might be my last ultrasound this pregnancy (and OH didn't tell me the measurements until after the visit - I couldn't see them on the screen). Compared to my second pregnancy, where it was measured transvaginally at 21 weeks at 3.9 cm, this seems really short.
It looks like I am at the low end of normal, and I am also worried that it's significantly shorter than last time. Could that one D&E have weakened my cervix?