The creature is filling her womb with seed!

At first, there was great pressure. The lubrication on the fleshy tube allowed it to press deep into her womb, where it seemed to blossom. Aurora could feel her heart pounding in her chest, her ribs vibrating. She breathed heavily.

The four inch girth expanded and contracted in a pulsation. It began to peristaltically thrust into her belly, in a way that was both tickling and a bit painful. She felt lightheaded.

After a while, she started to feel fluid flow into her belly. It was clearly cumming straight into her body, and she was afraid. The creature shuddered and throbbed over her pussy as it hammered her with its cock. The pressure continued, the oily cum flowing into her belly with a strange resolve.

She felt a stretching, and looked down to see her belly rising. Her womb filled with alien fluid, and stretched her flesh. Her belly rose, through her immediate screams, to a three and a half foot girth, with the phallus preventing any spillover. Finally, the phallus seemed to stop cumming, and slowly became flaccid. Her eyes were full of so many tears she could barely see.

It went from hard to leathery to silk like, and ever-so-slowly retracted from her womb into the oriface. The once vice-grip like tentacles released her, also slowly, and the creature crawled to her side, where it went still.