Swallowing darkness - Laurell K Hamilton

Merry Gentry is not your average private investigator. Half human, half faerie, she's caught in a struggle that threatens not only her life, but the lives of those she desires and holds dear. Her very existence and her rightful place on the throne of Faerie have long depended on her ability to produce an heir - and now, after many failed attempts, the services of her royal guards have found her pregnant... It is a triumphant moment, but revelation follows revelation: for Merry carries two babies, and she knows thay they have more than one father...

And of course, there are those of her own flesh and blood who want Merry dead, but she is a fighter and wields a wild magic. And this isherworld, where the magical and the mortal intertwine, where folklore, fantasy and erotically charged adventure collide...