Extern while pregnant?

I have a question on how to talk to my manager about this. I will be around 14 weeks pregnant (hopefully) when I graduate nursing school and I am currently a tech/extern. My manager has already offered me a position as a new grad with about a 6 week orientation. I won't be due for many months after starting, but I still don't know when or how to talk to her about this pregnancy, any advice?
Wait until you show. An that can take a while with scrubs.

I would talk to her right away. Just explain that you're eager to start and are excited about the position. I would think your manager would appreciate you telling him/her early on.