Overseas Vacation while 5 months pregnant?

Before I became pregnant, I was planning a two week trip to Asia next spring, and if all goes well, I'll be 25 weeks pregnant at the time of the trip. I'm wondering if I should still plan on the trip, or take it easy and stay home. Any advice would be great, especially if you can tell me what it feels like to be 5-6 months pregnant. Do you think I'll be too tired and sore to be walking around exploring? How about the long plane ride?Thanks!