One child

As you traveled, you found yourself avoiding towns and other travelers. Cassiopeia would support you any time monsters appeared but she always sent the Demons you encountered away with her authority. Even the few times you found them attacking people or doing mischief her commands were obeyed and they left instantly. Eventually you stopped seeing them at all... some order to stay clear must have been given.

Every night she would fuck you until you passed out and each day you would travel filled with her cock and your womb soaked in her cum.

One day you woke up with an odd feeling of movement inside your bulged stomach.

"You are pregnant my love, our first child."

You panicked for a moment but she held up a vial and the wafted fumes calmed you and before you realized it you were falling back asleep.

When you startled awake you checked your belly and found it flat as normal. For a moment you think it was all a dream but the unfamiliar soreness between your legs and milk dribbling from your larger breasts tells you otherwise.

"Good morning love. Sorry, I went ahead and delivered our baby and sent it back to the Demon King's castle to be taken care of. If you would like to keep it, then I can make sure she is returned to you after your journey. But for now, it wouldn't be practical to bring a child with us."

You are **** to agree, you didn't even get to see your child, so you aren't sure how you feel about all this. But as you pick up the panties with the portal on them you stop.

“I don’t want any more children… can I please wear normal underwear?”

You expect her to fight or balk but instead she shrugs and produces a skimpy black g-string. You felt under any other circumstance you would reject something so scandalous but at that time you couldn’t see it as anything other then a win.

“You are not getting out of our nightly sex though… I will use magical protection for that though.”

You wondered why she couldn’t use that protection for the portal panties… but chose not to speak up. It was fun, but it would be much easier to do what you needed to do without two feet of cock inside you constantly.

Eventually after a few more days of travel.