Doctoring Fate by Alexis B. Osborne

Aliens desperately want what’s in her blood, and it’s up to him to get it—but all he wants is her heart.

Darcy has wanted to be a doctor for as long as she can remember. Working as a combat medic in the military and eventually entering medical school, it’s right within her grasp—until her exposure to a deadly toxin leaves her bedbound. Her world shrinks to a single room, one forgotten by the military, school, and her family.
Until the day General Amato comes knocking with the deal of a lifetime: the military’s blood nano Vaccine, a cure, in exchange for willing participation on a dangerous mission. They must travel straight into the unknown heart of the wormhole in search of the missing Sasha Robinson.
All goes surprisingly well until she and her team crash land on an alien world hellbent on killing them. Carnivorous flowers, ambulatory trees, fantastic creatures straight out of fairy tales… and two green-scaled lizardmen offering a helping hand?
Maddox is the Raxion planet’s ambassador, and he is given one crucial task: gain the stranded humans’ cooperation at any cost. His people are desperate to uncover the secret of Sasha Robinson’s mysterious blood nanos—what better opportunity than four marooned soldiers?
He’s used to this work, lived and breathed espionage and subterfuge since long ago. And to avoid another Carthas massacre, he is willing to do anything, even woo the beautiful human medic named Darcy.
Show her the local sights, appeal to her sense of adventure, maybe even steal a kiss… Falling in love with her wasn’t intended. And when the Raxion Prime General demands results, it all may come tumbling down.