OP Here - went to the OB yesterday and he advised that I shouldn't go. I saw that Curacao just reported its first local infection, so I'm sure it will be on the CDC list soon. It looks like my airline will offer a refund with a doctor's note. This just seems like one of those things we'll look back on and say was an overreaction (I try to remind myself that pregnant woman are actually living there, and the majority of them will be fine). At the same time, this is a non-essential trip, and it's not worth the tiny risk or the worry.
On a sidenote, a couple years ago I was set to go to Mexico for a destination wedding in February. Had to cancel for a funeral. I f-ing hate destination weddings!