earth abides

[Samuel Logan]

so im reading this book its called earth abides and im having a problem...

the end of chapter seven (part one) following Emma's reminder to look at literature regarding midwifery. "well you had better get busy at that book work now. I guess it happened."and onward from there. i dont understand the conversation being held between them! alot of whats being said, seems to all be subtext! from what i can gather she is not announcing that she is pregnant but instead that she is of a certain ethnicity(jewish, i think) can some one clarify before i read chapter 8 please thanks