ask anyone who worked at the airlines in ticketing. for years women fly in alone 8-9 months pregnant, stay in a hotel until they deliver and get the child citizenship and then fly home. Ticketing was on to it, and would drop comments, "Wow, your really pregnant to be flying alone? Are you meeting family? It's a little risky to vacation so late in your pregnancy?" At first it was mostly women from China and then they started seeing women from the Middle East.
Ticket agents see it all.