If she’s a Nubian you’ll be able to tell the difference once she begins to bag up. Do you have a picture of her udder?
So they didn’t tell you around what date she was possibly bred? I got tired of having to guess due dates so now I write everything down

plus I no longer leaves bucks with the girls 24/7. Easier to narrow down due dates.
Edited to add: her teets look like they’re filling up but I can’t see her whole bag. I’ve only had my Nubian for a few months and I let her dry up

and her teets look super saggy and empty compared to yours. So hopefully yours is bagging up