Yes I had absolutely no problem with Soarin' when we went in Dec. I was 20 weeks preg. Really If you think about it there isn't much different about Soarin' than a carnival ride like umbrellas or something. You just sit in the seat and it is raised to be above the screen. You don't actually move other than the initial raising of the seats and then a little bit of rocking throughout the ride, but no big bumps,no fast drops, etc. The feeling of movement is mostly caused by the "movie" that they show on the screen. Really an awesome ride and this explanation does it absolutely no credit if you have never ridden it. You shouldn't miss it!
I even went on the Safari at AK, but after the accident the other day I might actually say it might not be the best ride for pregnant vacationers. Other rides that I skipped this year were Mission Space, Test Track, All of the Mountain Rides (SM, Space Mtn, BTMR), ToT, Rocking Roller Coaster, Expedition Everest. Just use your common sense. It's fairly easy to figure out which rides might be dangerous.