Choroid Plexus Cyst- very scared!

Funnygirl34

My OB just called to inform me that she found a small Choroid Plexus Cyst on our son's brain during my A/S last Friday.  She said it is most likely nothing to worry about but can be a soft marker for Trisomy 18.  I am absolutely freaking out and trying to stay calm.  She wants to do a follow up ultrasound but hasn't called back yet to make the appointment.  I know that this doesn't necessarily mean anything but I still feel like a wreck and want to do everything in my power to protect my baby.

Does anyone have any experiences with this??