I don't think you would be allowed to. When I booked it they said no one over 250lbs and then asked about pregnancy. Besides running into things, you also are standing on the Segway for at least an hour as you go around the World Showcase. We had a lady with us who was proably in her mid 50's who we didn't think was going to make it. She said the back of her legs really hurt. If you're pregnant and your feet are swelling any, you could be mighty uncomfortable before you get all the way around World Showcase. Of course this is the same lady that got to leaning too far forward on her Segway, got to going too fast, then panicked when the Segway started leaning back into her to make her slow down, and then jumped off. She also almost got knocked off as we went under a tree in China.