(I think you mean female vampires in adult bodies, and that’s why you mentioned Claudia as not included, while she is female, she has a child’s body; and for the fact that she was the child of Louis and Lestat – she was not a vampire at her mortal birth.)

You might try the Twilight series, bc there’s a pregnant adult female vampire in that! I haven’t read it, but from what I’m told, it’s not a fun experience, to say the least :-[ Similarly, I think Blade is a half-vampire whose mother was mortal and whose father was a vampire. He can walk in the daylight bc of his mortal half, but he still requires blood (or a substitute) for his vampire half. 

KEEP IN MIND: you don’t need to agree with me at all! This is just what I think, I think a pregnant vampire story could be very bizarre and horrifying and I rarely see it even attempted in fiction, so I think you could develop this concept and write the story of the pregnant vampire you want to see in the world! 

[^X] In my opinion, if we’re talking about just Ricean vampire/vampire or vampire/mortal procreation, I don’t believe that vampires are able to become pregnant or impregnate, whether through penetrative sex or artificial insemination.* That, and the fact that they already have a means of procreation already, which is the blood exchange of the Dark Gift.

BUT WAIT:

… psssst…. Some ppl do not accept it as canon, but if you want a VC book that has vampires+pregnancy, go for the ride that is the book Prince Lestat. A vampire doctor/scientist enables one of the male vampires to have sex and impregnate a mortal woman. She carries this baby to term, and that child ends up being fully human! I would imagine that the vampire doctor/scientist was able to get the male vampire’s ‘boys’ swimming around again from being dormant for like 200+ years (that’s some vintage stuff!), essentially making them mortal again? I don’t know, and thankfully, it’s not explained in much detail.

…

*I had written a Wall of Text backing up my statement, but it felt like it was trampling on the curiosity of the anon to have all that, which I didn’t want to do, so I removed it. In the plainest terms, I don’t think Ricean vampires have active sperm or eggs, or a working uterus (has any female vampire in canon EVER mentioned getting her period? Nope!) and you need those to make a baby, even if it’s half-mortal.