Jessica goes back to the couch where she left the strange box. Lifting it, she gets a big whiff of whatever scent was left inside and her chest starts to tingle again. "Oh no!" Jess frantically tries to ditch the box but it's too late. Her breasts explode again from her already huge J cup to a size that can only be described as basketballs. Their instant heaviness topples her over onto the floor as the same pleasure from before sets in. They grow even larger and fuller as Jessica trembles in sweaty bliss with her new obscenely large chest. All of this new growth and swirling energy inside her makes her orgasm quite a few more times.
Laying topless and exhausted on her floor, Jessica lies dazed from her many powerful climaxes. The tingling on the skin of her breasts dies down eventually but is replaced by a strange chill on her nipples. Jessica tries to look for the cause but her new large size has moved her nipples out of view. "This is ridiculous." Jess strains herself but manages to reach an arm over to one of her freezing nipples.
She taps it and feels a strange wetness. "Is that- No it can't be" she tries to convince herself but her curiousity gets the better of her and she touches it again. This time a few drops of cold liquid leak from her teat. She does it one more time and like she broke the tap, milk starts gushing out. Jessica, not knowing what to do, tries to pinch the teat closed but the pressure of the milk is too strong and just makes a bigger mess. To avoid flooding her apartment, Jessica tries to stand up and head to the bathroom or something, but her chest is just too heavy to move by herself.
But then, for better or worse, Jess hears a knock on her door.