flying
I travelled during the first trimester, once very early on and again at about 9 weeks and both times all was well. Obs suggested moving around and flight socks and lots of water - these were just short haul (Bangkok was the furthest). i then read that you should not fly in 1st trimester, but not sure on the reasons for this. i did check & think many people fly throughout the whole pregnancy with no concerns at all.
i have just got back from the UK (18 weeks) and that was fine as well, bought the scholl black support socks and they were quite thick and actually made my feet hurt in the end, but on the way home bought 10 denier nude ones and they were much better, no swelling or problems at all.
Am planning another short haul trip in a few weeks and then back to the Uk at about 30 weeks. Not sure how comfy that one will be but will keep you updated.
Hope that helps and happy flying!