well you can still fix it, before you go to finalize the deal set - mcLikeBDSM = 2 and you are good
and beside that, ch3 with (start new game at ch3 and 20?) will start with next update, so if i would had to replay that chunk of content would rather wait. but you got solution above
non of the main girls have to be pregnant, to be sure extend invites to all before, they have to have kid to be able to inv and then you wake up in sat morning and got option to go.
from dev
tho if you dont have content completed up to that point you can have issues, logical paths are broken and should be fixed with next update