After a week of waiting we received a scan from the Dr on Saturday morning. This is the 16 week scan. The twins are progressing well with all vital statistics within the normal range. One twin is 16 weeks and 1 day and the other is 15 weeks and 5 days. As we haven't heard otherwise we are assuming that the surrogate mother is also progressing well with the pregnancy.
We are still waiting to hear from the Dr regarding the progress of our high risk pregnancy.
I will provide further updates as more information comes to hand.