Hay nako, nakaka-stress talaga yan! A few of us mums have been through similar scares with high-risk referrals, at honestly ang dami ng times na normal lang naman ang outcome kahit ang initial findings looked concerning. Since your CAS came back normal, that's a really good sign, pero definitely follow up with your OB about the polyhydramnios, they can monitor it closely and see if baby's kidneys and stomach develop normally as you progress, kasi sometimes it resolves on its own or it's really nothing serious. Hoping everything goes well with your delivery, and feel free to ask your doctor specific questions about what the next steps are; they can give you the peace of mind you need!