I flew a bit in early pregnancy and each time asked for an alternative to the full body scanners they use in the airport (the imaging ones, not the metal detectors) cue much stropping and huffing from the security agents at the gates (all based in the US)
I'm now 16 weeks and due to fly this weekend and still debating whether or not to bite the bullet and just go in for the scan instead of the 'intimate patdown' in front of an airport full of people; keeping flyers dignity is not a strong point for the TSA!
I don't recall reading anything definitive about whether to keep avoiding them or not and the advice is a bit contradictory as some of the machines use low level radiation, and others don't but i wouldn't trust the security agents to know the difference about which is installed.
Can anyone shed any light / info on whether this is a(nother) thing to watch out for, or whether it's ok