There was once this porn-fanfix about Aliens' Newt, called Newt's tale, or something like that
In that Newt survived basically by being a surrogate mother to the Aliens, faehuggers impregnating her womb, and then birthing chestbusters
She was kept fed by a "male" alien whose "cock" was ejaculating protein-rich substance she was force fed with during such impregnations.
I also remember a chapter dealing with another kid, a boy, who also let him get impregnated in the ass, but died during giving birth.
Does anyone have that story, I searched afar and wide, and nothing came up, the original site I found it on has been long down...