gulf babe,
i worked for GF for 2 years and i was under the impression that you were not allowed to fly while pregnant. however i suppose you could and not disclose the information to the company, but im sure once you were showing they would have you out of there fast, or else you would be sent to grooming and put on the 'fat list' and sooner or later they would find out. basically im pretty sure it is not allowed and is outlined in the contract.