@eb3 What kind of twins do you have? Mine were di/di and identical; each had a different cord situation: Baby A had a v-cord insertion and Baby B had one in and one out, instead of two in and one out.
Baby B was under 10% every time they measured (20 weeks onwards). I had 4+ appointments per week to check cord flow, NST, growth scans etc. It was dizzying. They over-measured baby B; at 36+3 they were born 4 lbs and 6 lbs. I did not think they would both make it until both girls were home with us.
Twins are full of shenanigans. I wanted to be prepared for any outcome, and to know that I had done my part, but the Universe or whatever had its own contributions to make as well. Drink some water, have a nice portion of protein, get some sleep and take a sick day from work tomorrow to maybe go for a walk, the four of you, to reconnect with your values? Or some other activity that tends to bring you joy and clarity? How can you learn on your values and each other while navigating these waters?
Do you trust your care team? If not can you get a second opinion? I live in the U.S. and in my city, the midwives seem to have the best recommendations around finding experienced OBs and MFMs.
I've been through some things so far in this life and am probably more adventurous than your average bear. But the twin pregnancy--it's one of the hardest things I've ever done. Hands down. I salute you in this moment of uncertainty!