http://archive.heinessen.com/mlp/thread/19167113#p19189387

>"So, you sure now is your safe period?"
>"Yeah, I'm a girl, I think I'd know more about it than you."
>"How on Earth did you get me to agree on this anyways?
>"What's an earth?"
>"Oh for fu-... *sigh* just don't worry about it."
>A few weeks have passed, with Derpy beginning to feel sick
>"No not on the floor! I told you you shouldn't have ate the whole basket full."
>"Well sorry, I was hungry and it looked so good."
>After the months go by, The Doctor finally got the courage to speak up about something. What a terrible mistake it was, though.
>"So, uh, Derpy, I think you might want to lay off a few muffins."
>"Excuse me? What are you trying to say? I've had plenty of muffins."
>"Oh well, I mean, you should, p-probably save some for desert?"
>"Hey, great idea!"
>"Years and years of time travel and you still can't try to tell a woman she's fat."
>"You say something?"
Finally, it was getting a bit too obvious to tell she had "gained some weight" so Derpy had gone to her local doctor for some diet options, except she wasn't walking out with diet plans.

>"Please, tell me this is your idea of a practical joke."
>"It's not a joke."
>"It's just a little fake test, right? Right?
>"You think a pregnancy test from a real doctor is fake?"
>" You said you were safe though!"
>"I was, uh, I think."
>"Well I think it's safe to say you were wrong about that."
>"In my defense, it's hard to tell what day it is anymore."
>"I don't think it matters what day it is, you've been time traveling with me all this time."
>"Well there, that explains it."
>"Of all creatures, and equine! Of all the assistants I've had."
>"You seem to like talking to yourself don't you?"
>Month after month, and Derpy is reacting perfectly normal, too bad the Doctor is now a frantic mess.
>"Well, I'm pretty sure you're not going to be going on any dangerous adventures anymore."
>"No more time travel?"
>"There's no way I'm risking something this big. I mean, I've saved entire galaxies, but never have I had to take a child, let alone my own son and daughter to places that I don't even know have oxygen."
>"Well, you can't just leave us."
>"You won't have to worry about that, I could travel 5 billion light years and save 3 major icons in the world and still be home for supper."