When you enter each park make sure to get a map of attractions. Where it lists each area and all the rides in that area, they use a symbol guide and at once quick glance you can see all the rides that have a physical contraint warning. Those are the ones I avoided. Also, at the entrance for each ride it'll say if they don't suggest pregnant women to go on. I didn't go on any roller coasters or anything with drops (except for POTC, I didn't realize there was a small drop there. I didn't go back on it a 2nd time, but I'm overly cautious in general). I asked my dr. in advance if I could go on the safari ride (because I read on here probably not a good idea) and she said yes, expectant mothers shouldn't go on but at an early stage it's fine (I was 3 months at the time), I went on it 2x and felt fine on it.