Jade Bleu 
Shared Fertile by Aliens #3: Edie [EPUB ebook] 

Aliens vied for the chance to probe and fertilize me rough!
Aliens invaded Earth in a mating frenzy. I was raiding a supermarket when appendaged males showed up to vie for a chance to claim me. The winning pair took me hard right on a car hood in the parking lot until they planted their offspring in my belly.
An erotic sci-fi story featuring MMF multipartner alien claiming, DP with rear entry, fertile fun.