I think Shastras are applicable to people who are existing in this world by the so called process of birth.
A mother in three months of her pregnancy does not even has a complete developed baby , if one is talking in terms of Shastras then I would say in scientific terms it's not called a baby but is termed foetus.
All shastras were wriiten in keeping mind worldly material and immateria existants.
One one side creatives are showing a complete orthodox village, but in that they have not failed to show two people maintaining intimacy. Something beyond reality. I would have preferred if they had not brought this pregnancy issue in between.
Bringing such issues will sort out nothing rather give some ideas for five or six episodes.