Here's all my measurements:
18w6d: 43mm (measured trans-ab, all others trans-vag)
I think 40mm is normal, but anything above 25mm is good. Considering I've had part of my cervix removed, I wouldn't expect my normal to be 40mm. The good news here is that the length is pretty consistent and not shortening with each check. Whew! I feel very blessed that the leep I had in 2004 has not affected my ability to carry a baby.
I had prepared myself to not get to see the baby at this u/s as it was just a cervix check. But to our delight, the tech spent some time viewing the baby as well without us even asking. Seven is doing wonderful. Here's the stats from the u/s report:
HB: 148 bpm
Presentation: traverse (head on the right, feet on the left)
Fetal Movement: visible
Amniotic Fluid: normal, 13.4cm
Cord: normal, 3 vessel cord
At our 18w6d u/s, we were diagnosed with placental marginal cord insertion. This is where the cord inserts into the edge of the placenta instead of the center. Many times this has no negative implication, but it does carry some risk with it that the baby may not get the nutrients and oxygen that it needs in the 3rd trimester when the demands for nutrients are higher. This can result in intrauterine growth restriction (IUGR), possibly having to take the baby early and worst case scenario, still birth. We intentionally didn't tell anyone as we wanted to pray about it and were believing that the placenta would not cause any problems. We were thrilled when we learned that our diagnosis was reversed at our latest u/s and the cord was found at the center of the placenta!!!
Here's a few u/s photos:
How big is this thing going to get? ;-)