Nafretiti
I thought pregnant also.
When she stopped to have Danny say something after the whole 'you are the last person who is ever going to hear me say that' I thought 'pregnant, only she would say that to the father of her unborn child, meaning, she will want to propose to him or something, she is that type of 'modern' girl'.
But then you also have to remember that she met her great grandchild in Listen who mentions his grandmother spoke of time travel
so she would of had to be pregnant in that episode and what woman wouldn't want her childs father back if she could get him back?
So whilst she could have the child and let him grow up without a father Moffat isn't that cruel to not let the one many in the universe not help her get back the man Clara loves, they have been letting her have a lot of stuff as it is (not as much as Rose but whatever) so why not give her her babys daddy as some part of payment for what shes done with all the Doctors?
No... she wouldn't have had to be pregnant in that episode. Why wouldn't Orson Pink be able to meet Clara
before Clara gets pregnant?
In fact, Clara was most definitely NOT pregnant in that episode, because she and Danny had only been on one date.
Also, Clara IS the great grandmother who spoke of time-travel.
Clara: Orson... do me a favor. When you get home, stay away from time travel.
Orson: Runs in the family?
Clara: What? What do you mean, runs in the family?
Orson: Nothing, it's just... silly stories one of my grandparents.. well, great-grandparents...