Let her decide

"Sweetheart? How do you feel about babies? Do you know that if we keep having sex, you'll get pregnant?" you ask.

"What do you mean?" she replies.

"The jizz will make a baby in you. Do you want that to happen?"

"I don't want to stop having sex with you. If your jizz will make a baby in me, then I guess that's a good exchange for the best I've ever felt in my life. I don't want to stop this," she says, turning to you and reaching for your cock.

You moan and kiss her, then say, "There's a medicine that will let us have sex without having a baby."

"What? Really?" she says. She looks concerned or curious, you can't tell which.

"Yes, if you want to keep having sex, but don't want to have a baby yet, we can get the medicine tomorrow. Or if you want to have my baby, we just keep doing what we're doing now. Which do you want?"

Aranta looks thoughtful, the implications going through her head. She seems to come to a decision in a minute of thinking.