Mixed Emotions - Follow up to genetic U/S

Mrs D~S

A few weeks back I posted that they found  bilateral choroid plexus cysts on our babies brain.  I was sent to a perinatologist for a genetic U/S.  We had our U/S yesterday - the cysts are gone YAY - and there are no other markers, but the perinatologist tells me that he has seen similar ultrasounds with babies born with Trisomy 18.  Now we have 4 months to go with this pregnancy and I am becoming extremely depressed.... he gave me the odds of 1 in 400, but not knowing is killing me.  He told me I have the option still of an amnio, but he wouldn't recommend it for how far along I am.  I was expecting a definitive answer, and I received the complete opposite.