As soon as she woke up, Mary went into a panic. Had she broken herself? Did she cause irreparable damage to her body? Such questions rushed to her mind as she looked at herself in the mirror. Her balls were still missing... and presumably still inside her.
She used a couple of fingers to feel around her vagina anxiously, but she could not find any trace of her missing testicles. She was still wearing the pink and blue bracelets, and both of them were still active. So, she presumed, she still had balls... she just couldn't find them.
An idea struck her. She used the horizontal axis of the pink bracelet to widen her vagina to get a better look inside, immediately moving the setting from its default to its maximum value. She felt her pussy gape rapidly, then widen inhumanly until she was carrying a canyon between her thighs. Unfazed, she looked into the mirror. She could see straight to her cervix... but there was no trace of her balls anywhere. "They must have popped inside," she realized.
At the same time, she wondered how on Earth this was possible. She was tempted to try to widen her cervix, at least to see inside. However, probing around that area with her fingers was immediately very unpleasant, so she quickly abandoned the idea. Maybe a different approach would be to first confirm that her balls *were* actually inside her womb. She could only think of one way to do so.
She looked at the blue bracelet and hesitated for a second. "This will be wild," she thought. Her dick was rock hard and throbbing in excitement. "Well... you only live once."
She moved the slider on the blue bracelet to make her balls grow. The first step should bring them roughly to the size of chicken eggs, she remembered. As she moved the slider, she thought that she felt a movement within her womb, but it was barely perceptible. She needed more solid evidence.
The next step on the slider again would have made her balls grow to the size of tennis balls. This time, she could definitely feel a significant shift of weight inside her body. "Oh yes," she thought, panting slightly, "they're definitely in there." She also knew that there was no stopping at this point. She *needed* to see her far she could go with this. "For science!" of course.