HI.
I had booked and paid for a trip to HK to accompany my husband - he left yesterday - I would have been 8 weeks - and my OB said it was fine. (And I am a high risk cos of my age etc). I asked again at my U/S and the dr said fine too.
I chose to put it off until the next trip (where i will be in 2nd trimester if i make it) only bcos I am SO SICK. I was really looking forward to it as i love HK but just thinking about all the wonderful smells up there sends me heaving and I didnt want to spoil my DH's work.
I did read somewhere that they dont recommend flyving in the 1st cos of radiation - but I tend to believe the OB's and Drs.

Also, just out of interest, my SIL who worked for international airlines said one of the reasons they dont like you travelling internationally close to due date is that if you have the baby on the plane(the mind boggles) all international airspace laws govern what nationality your baby will be and its a whole big headache for the airline!!!

Best
D