Hi, and congratulations! I can sort of kind of answer your question because I sort of kind of was in the same situation. I was 7.5 months pregnant when I attended my company picnic in
Disneyland. Not WDW, but same situation.
I emailed Disneyland with my question, and I got an answer that basically said this: If a ride is all about the MOTION, stay off it. If the ride is primarily about the SCENERY, go ahead.
So, no Star Tours, no Space Mountain, no Expedition Everest, no Test Track. YES Pirates, Small World, Great Movie Ride, Ellen's Energy Adventure, etc. The one I would ask about is the Safari ride - it kind of goes fast but I'm not sure that it's dangerous.
Incidentally, I went into labor early, about a week and a half after that picnic. I think it's because my daughter could hear DL and wanted to come out and see it for herself!