I think as long as you feel you can handle it and your doctor feels it isn't a problem, then go! I went during my pregnancies without any issues-although I had plenty of people give me their opinions on what a horrible mother I was for doing that. (I guess I should have sat home in their eyes). Do what you feel is best and follow your doctor's advice. If he doesn't think it would be wise, then maybe plan something for after the babies come.