Maz - in answer to your placenta question... It is difficult to predict the state of a placenta by u/s alone. The best predictor of placental health is growth. Dopplers can be done to show blood flow - another good predictor. PAPP-A being low is also a possible predictor of poor placental health. Movements that a strong, forceful and regular are one of the best and non tech methods too!

Whilst my situation is different - just for some awareness.... As you know I was hospitalised at 26+4 weeks with an autoimmune response. I was transpported to a tertiary hospital. I was u/s frequently. Imogen's movements during her last 3 days inutero were undetectable to the point that I really thought she was dead. I had convinced myself she was gone. No movements in more than 24 hours.

Anyway - dopplers had been fine and the placenta looked fine. When she was born she was significantly smaller than u/s predicted and the placenta literally fell into threads. The surgeon showed me - knowing I was a nurse... No u/s had detected the dreadful state of my placenta. Immy was on borrowed time.

Placentas can show up some calcification and still be fine - placnta s are a large organ and adept at sustaining life. U/s though is a poor predictor of placental health (though of course helpful) - from the words of the top dog in Fetal Med at RBWH

T