Well the statue in that temple does as it shows an image of all girls either in casual or in their wedding dress.
Regardeing the pregnancy though I'd think the Wiki has something like that
I know about the Statue, and at the Moment, that works out easily as there are only very few of them. but that might Change in the Future as wellNo but you can count manually, all you need is to open the cg screen and to count the hearts.
As Evangelion mentioned, you can see all possible marriages in the church when you interact with the statue.
Regarding Pregnancies, I couldn't find something in the Wiki, and the Characters-Overview-Page doesn't have a Column for "can get Pregnant" (yet, at least), that you could sort by. Even if there was, that doesn't mean there can't also be an In-Game-Way to look it up.
I think a Temple Nun tasked with keeping a full Record of the King's marriages and Children would make sense (Could be a very funny Character BTW, a Virgin Nun who spends all their Time tracking the sexual Exploits of the King... ^^). Alternatively, there could be a simple Completion-Counter like with Crafting Recipes. Counting them in the CG-Room works, yes.
But that is not really a Solution, more like a workaround. What I'm thinking of, is something that solves the Problem of having to use this Workaround.