Hhmmm I'm not sure but then I've a very sensitive tum too. DH wanted to go to bali when I was pg with DS and I wasn't comfortable with it so we didn't go (I've since been and glad I didn't go when pg. I think the heat would have been too much for me let alone being worried about getting bali belly!).

If you decide to go I'd just be very very careful about what and where I ate (which I'm sure you would be).