Hi Jenn,

Personally, I think I would tell the agency... Mainly so they know about your situation, and don't place you anywhere that you might be putting yourself or bubs in danger. Although I'm sure you can work that sort of thing out for yourself, it would just make it a bit less awkward if the workplace you're sent to asks you to do something you're not comfortable with after you've already started.

Never been in that situation though, so this is not from experience!

Good luck with whatever decision you make