Hi, I had the same problem, with flights already booked and very expensive to cancel (although of course that isn't the main thing). I checked with the midwife, GP, and consultant to see if they recommended against flying and none of them did. I was really nervous, but I made sure that I made the OH carry everything (and I mean everything) and it seems to have been ok. I must admit, I was really worried, but in the end I figured that if three people who are supposed to know thought it would be ok, then who was I to argue. Oh - they did recommend flight socks though. Have fun if you go!