The creature is filling her belly with seed!

Aurora gagged as the creature pushed its hidden phallus into her belly. It began to thrust in peristaltic motions, fucking her as it were. She tried to spit it out, tried to bite on it if she could, but nothing seemed to work on it! It was so big!
She felt her eyes filling with tears at it thrust faster and faster. She began to feel oscillations in part of it, in the glans she suspected. Was it cumming? It began to pump. She felt herself getting dizzy, and her belly feeling fuller suddenly.
She tried to roll on her side, but the resin still held her fast. She felt a heat and a pressure! It was cumming so hard! She felt the urge to vomit, but it was denied by the **** of the phallus.
Her belly began to swell. It must have been completely filled with this...semen. She felt her abdominal muscles strain after a time, with the bare effort of holding it all in. Finally, she felt the creature start to shudder. The phallus began to become flaccid in its final pumps, then slowly retracted into the creature. She choked and coughed as it pulled out of her. Then, finally, the tendrils released their grip and it fell to the floor, lifeless.
She looked down. Her belly was two feet wide, and while her instinct was to try and vomit it out, somehow it had been impeded. She had been inseminated orally by an alien creature, and whatever it was, it was working in her.
She lay her head back. This was such a nightmare!