as the op's not been back since I guess she's choosing to ignore all this anyway

No idea if you are talking about a small or large business. If a small business needed somebody reliable to fill in short-term - and you tell them you are pregnant AFTER they've taken you on- then my sympathies are with them. Sadly, people like you mean that all young women are regarded with suspicion and avoided by so many employers, 'just in case'. Again, so many suffer because of the dishonesty of a few.