Vamp Spike and Slayer Buffy trying to get preggers

I tried to search this but nothing came up. Maybe I was searching for it incorrectly but here is what I am searching for:

Spike and Buffy are 'married' (mated/claimed) and they are trying to have a baby. They try everything like Spike drinking warm blood etc. There is a scene where they fight and Spike says that maybe there is something wrong with Buffy and she basically calls him a loser who can't get her pregnant.

Ring any bells? I feel like it was a part of some 'baby' series but I can't seem to find it. HELP!!

The wonderful The Baby Series by Mrs Muir has a segment where Buffy is desperate to conceive although I don't recall the specific details of what they did exactly but it put a severe strain on their relationship. It was in story two, Babies are a Good Thing.

The Baby Series by Mrs Muir

http://dark-solace.org/elysian/series.php?seriesid=28

Summary: Series of four epic fics covering the Babyverse. Spike is called away by Drusilla before he can meet Buffy at the Bronze in Tabula Rasa. He doesn't return to Sunnydale until after the fiasco of Xander and Anya's wedding. Things aren't the same as when he left town...especially Buffy.

Now, if there is another story out there that is what you are actually looking for then I have no idea. But I think this is what you wanted.

No reply from OP...marking this as 'found'