Help!!!

Bebe • Mother of 2 amazing boys🙇🏽‍♂️,Girlfriend to an amazing boyfriend 💏 , MC 9/25/18👼🏽 my 🌈 👶🏽 8/26/19 currently pregnant with baby #3 a baby girl 🎀 coming 2022

I’m currently 33+2 and my water broke of course I’m scared and nervous and fulled with all types of emotions. I’m at the hospital on bed rest until their ready for me to deliver him the doctors told me their trying to keep my son inside me till 34 weeks. The problem I have is when I had my ultrasound done at the hospital they told me he’s measuring Small like 30/31 weeks when I know that can’t be right because I’ve had numerous appointments for ultrasounds at another hospital and everything was fine. I’m scared and don’t know how to feel they keep asking me when was my lmp and making sure the due date matches up with what I’m telling them, I know it’s their job to protect me and my baby I I’m just scared something will go wrong.