I'd skip Autopia ... LOTS of fumes - they make me nauseous not pregnant, and it can be VERY difficult to get in & out of cars & there can be some bumping. In fact, I believe the sign does say no pregnant women should ride. Bobsleds are also an obvious no-go. Of all things - I find Dumbo to be a bit much - going in circles - round & round & round. That said - teacups spin probably too much for a pregnant woman. Some of the kids' rides can be surprisingly jerky - not enough to warrant a pregnant woman not to ride per se, but can be a tad jarring & jerky in the movement of the cars - Mr. Toad & Alice in Wonderland in particular.
To rest your weary feet - definitely Small World & Pirates of the Car. for a nice, long, air-conditioned repose. And, don't forget to treat yourself to a Dole Whip at the Tiki bar. I'm taking my 3 -year old & 10-month old there May 7th ... her 4th trip, his 2nd - we visit from the Chicago area.