Personally, I dismiss, refute and reject the idea, the concept and the plausibility of it being Amy + The Doctor.
It would only be that, in my opinion of course, if the Silence had taken the TimeLord DNA, restructured it into an Embryo and placed it inside Amy.
Neither of them would go further than Best Friends, it just isn't that kind of relationship.... And until it is on screen and undeniable, I will not accept it
Just because they don't remember when they look away doesn't mean that they would do stuff they wouldn't normally do...
Wouldn't you be uncomfortable talking about an apparent pregnancy you blurted out about seconds before shooting a kid in a spacesuit? Especially when you haven't told your other half...
I agree, that potentially the Lodger abandoned console could have been for the child, but it was abandoned.... We don't know how long for... It might have been there for a year, 5 years, 6 months... etc etc