Jade Bleu 
Shared Fertile by Aliens #1: Joy [EPUB ebook] 

Aliens brought me to their ship and fertilized me rough!
The planet was watching live coverage of an alien invasion when I suddenly found myself aboard the ship in orbit…and two hot, ready male aliens were ready to show me what they’d come for! They were more than equipped to make me scream with pleasure, filling me good to implant their offspring in my belly.
An erotic sci-fi story featuring MMF multipartner alien claiming, DP with rear entry, fertile fun.