For months now, there'd been something watching you. At the edge of the woods, peering through your windows in the dead of night, following from afar as you left your home. The feeling never abated. It was always with you.
If that wasn't enough to make you scared, then the knowledge of what was following you should do the trick: Seed Eater. A creature thought myth and urban legend come to life to haunt you specifically.
The Creature was known to lure in small children to eat them, but adults were rarer. Yet it didn't want to eat you. No, if it did, it would've been manipulating you from the start, getting you comfortable around it before it striked.
No. Seed Eater wanted you for something else. Something much more... unexpected.
See, the creature had lived in this part of the country for centuries, alone, only coming out to feed every few years. It didn't take more than it needed, lest it be discovered and hunted down. And like all living beings, it had biological urges as well. Urges it had ignored for a long time, but that had finally won out.
Simply put, Seed Eater wished to plant its seed in another being and watch life bloom from it. And it had chosen you as its young's host.
It watched you for months before deciding, finding you a perfect fit. You lived far enough from town to not be discovered or questioned when your body began to change, and from what it observed, you didn't seem to be much of a 'social butterfly', meaning you'd stay home often. Good. It would hate to corral its mate back to their den too regularly.
Hm. Mate. Yes, that's a fitting term.
Now, before sowing its seed, it would need to court you enough before it could mate you. Simple enough, yes? It had observed these acts from afar long enough.
So on one foggy evening, it began to approach your home, fur puffed up, groomed to perfection. It clacked its beak slightly, walking up to your back porch. It knocked on the door. Tap. Tap. Tap. Its claws flexed, a bundle of wildflowers it had gathered in its grip.