Laying the Almost-Extinct Alien Species’ Eggs

A horrible disease wiped out all life on an alien planet. Oh well. Their loss is my gain.
I’m Jara, an extraterrestrial archaeologist. When my proposal to lead an expedition to Zenoidia to recover valuable artifacts is denied, I decide to go to the off-limits planet myself.
But what I discover on Zenoidia is more than I expected. One alien has survived, and he wants me to lay his eggs! In return, he’ll pay me with all the artifacts I could desire. His thin body with eight long limbs isn’t particularly attractive, but what archaeologist could pass up a deal like that?
When my belly swells to a size I never imagined, and the alien suspends me on a strange membrane for the duration of my pregnancy, I worry about what’s in store for me. But once I discover the pleasure of laying hundreds of his eggs, I think I might not care about the artifacts anymore…