Please don't go pressing the vote down button, but maybe, just maybe, it could be time to overthink the whole monarchy-thing, perhaps? Those people's role is mostly symbolic, they're in it since/by birth and without ever having a choice, have to basically give up having a normal life and be forced into the spotlights all the time.
I'm not English, but my country has royalty too and I'd boot them out, no problem. They do nothing but cut ribbons, visit sites and cause trouble/scandal + spend money.
This is just my opinion and you might disagree, which you're free to do, of course, but I think present-day royalty is practically an imprisonment and borders on violating people's rights. I see a lot more cons than pro's, really.
What should it really matter if she's pregnant or not? They love each other, no? It shouldn't be a problem either way. People have children all the time, they're people too, even if they might one day ascend a throne.