Stray Omega by Lizzy Bequin

progress into quivering, then clenching, and finally a painful shooting need
deep inside her feminine core. Her skin would release all kinds of pungent
smells, signalling her intense need, calling the alphas in by droves to breed
her.
When that happened, however, she would be huddled safely inside her
underground burrow, deep within the bowels of the earth where no alpha
would smell her. There she would ride out the agony alone until the heat
finally passed.
It would be horrible, but the alternative would be far, far worse.
The little omega had seen the terrifying effect her heat-scent would have on
the alphas once before. It had been her very first heat. She had barely gotten
away from the alphas that had come for her then. She had scratched and
bitten, and at least one of the alphas had been left so mangled he would never
breed again. In the end, the omega had escaped, bruised and battered but
unbred.
After that, she had learned her lesson.
Whenever the heat came upon her, she hid.
But she would need food for the hiding time. Her secret burrow had a natural
spring, a source of clean water to keep her sweating body hydrated through
the excruciating fever of her heat. Food, however, was another matter.
Venturing above ground to hunt or forage was out of the question. For one
thing, her heat-addled brain would not be able to focus. For another, her heatscent
would make her presence known to every filthy alpha for miles around.