An impregnation scenario I've been having a lot of fun with for a while is somehow attracting the affectionate attention of some sort of otherworldly being, having a lot of abstract wet dreams about being dominated by an unseen force that speaks inside your head, and waking up pregnant for reasons that don't make sense to you, because those were just dreams, they shouldn't have real consequences, right...? But their dreams only get better and better as the eldritch thing contacting them loves to spoil their little pet while their unearthly spawn grows in them.
Or, a fun reversal, an eldritch being so infatuated with a human being it takes a human shape to let the human being dominate and breed them, excited by the novelty of pretending to be weak and submissive when they've been treated as terrifying and powerful all of their ancient and endless life, and then being confused and scared when their new humanoid form starts feeling strange symptoms and growing increasingly round in the middle and they can't change back, or make it stop. But their human is so excited... taking care of them so well... gifting their pretty otherworldly pet a collar and maternity clothes... maybe they like this better than being scary.
You know, I wasn't expecting this to be as delightfully fluffy and sweet as it is. Great job surprising me, anon!
Both scenarios are a lot of fun, but for some reason, the second one is really resonating with me today. The thought of an incredibly powerful eldritch being diminishing themself to undergo such a primal human experience—and unexpectedly liking it—turns the usual trope right on its head. I want to read more of this!
(Replies for Mayternity's "What's your favorite impregnation scenario?")