Not every woman has nausea when pregnant (I didn't) and my goodness, we have heard tales of women GIVING BIRTH and not knowing they were pregnant.
Now years ago, our ancestors did not have vitamins, pre-natal care, and many women had large families, gave birth at home, etc. etc.
And ...yes, there ARE women who, for some reason, continue to have a monthly cycle, even though pregnant. (And my mother was one....and she was a nurse!)Thus are not aware they are pregnant for several months.
I agree that Abby should have taken a home pregnancy test. The thing is, her pregnancy test MAY have been done too soon. Thus she did not show up pregnant from the cabin encounter, but heck, she could have become pregnant from the shower romp, which happened just a couple days before she went to the doctor.
We all know that Salem has it's own rules for medical issues, depending on the whims of the writers. LOL
That said.....I hope she is NOT pregnant. But I do like the fact that there is an attraction between her & EJ that neither can seem to resist.