If it is of any help to the discussion, I have had four pregnancies and with each I flew full time up to , between 15 and 27 weeks.
Maybe it is my personal health or constitution or maybe I am just considerded " a good breeder" but besides feeling tired in the first 12 weeks, I had very good pregnancies.
I now have four children aged between 5 and 11 and their health is excellent.
My advice, listen to the statistics and take heed but dont get spooked.Like Anyfly girl advises, assess the situation for yourself. If you decide to fly then take it one week at a time and see how you are feeling.
Information and statistics are great. We now all have much more information at our fingertips and are wiser for it. When I decided to have children I was told " it was perfectly safe".That was a best to their knowledge statement in the early 90's. In hindsight I am glad that the stats weren't around when I was considering pregnancy or I may never have had my 4 children.