Chapter Text
The new layout of the console room was magnificent. So many new odds and ends, so many controls and displays to play around with, yet none of it could distract the Doctor from how badly she had to pee.
Standing still was impossible, had been impossible for the past few hours. No amount of bouncing about, of jittering and twisting her legs would calm the pressure in her bladder, so full it was practically screaming at her. Stop this nonsense! Run! Run now! You have to pee! You have to pee right now!
But still, the Doctor remained at the console, crossing her legs, and fighting to not grab herself as she struggled against the worsening urge. It was a good thing her new friends had gone to bed. There was no way she could hide it, that they wouldn’t notice how badly she needed to go. Oh, she could just imagine their looks of bewilderment, seeing a grown man… no, woman, doing a textbook potty dance. They’d think she was mad – in a very different way than was already proven – and tell her to just go to the loo already. They wouldn’t, couldn’t, understand, couldn’t possibly comprehend how something so basic could give her so much anxiety.
It had been nearly five full days since she first felt the urge to go. The feeling had been dull then, hardly even there at all, but with little else to do while lingering around in Sheffield, she found herself visiting the toilet. All was fine at first, until she unzipped her trousers and reached inside, the realization that she no longer had a cock to pull out sending nerves buzzing through her chest and stomach. A new body always took some getting used to, but this was… different. Everything about this body was different, even the way she had to pee. It had been exciting at first, even a welcomed change – it was so rare that she was happy with a new face so quickly – but something about this was… too much.
Unable to undo the knot in her stomach, she simply zipped up her trousers, stopping to wash her hands before leaving the bathroom. She barely had to go, after all. Time Lords needed to empty their bladders far less frequently than humans. Surely, she could wait until she was back in her TARDIS, where everything was familiar, and she’d be much more comfortable having this body’s first pee.
Then that didn’t happen. She tried, she really did, even went to one of her favorite bathrooms on the ship but couldn’t bring herself to do it. For several minutes, she stood there, five more days of urine in her bladder, but the very thought of undoing her braces and sitting down only tightened the knot. This couldn’t go on forever, even a Time Lord’s bladder wasn’t that superior, but she just couldn’t do it, not yet.
So, there she was, biting her lip to keep from whining as that desperate need persisted. Hands on her hips, her eyes squeezed shut as her thighs pressed tightly together, those horrible throbs begging her to just release. More than anything, she longed to have Missy there with her. Missy would know how to help her, even if she’d first make a point to laugh and make fun of her current state. She knew what this was like, adjusting to a female body after being a man for so long. There had to have been bumps in the road for her too, even if she eventually took femininity in stride. No one else in the universe would know what she was feeling quite like Missy would, but she was gone, off to god knows where with the Master that came before her, leaving the Doctor no choice but to deal with this alone.
Another tight, angry spasm went through her bladder, nearly pulling a desperate cry from her lips before a hot burst of pee spread through her boxers. Gasping as her blood turned to ice in her veins, she abandoned all pride and grabbed her crotch, twisting her legs tightly around her grip. The leak stopped, but a violent, burning throb went through her bladder, fighting to start again. Both hearts raced in her chest, knowing there’d be no more waiting. Whether she wanted to or not, she was going to pee, either on the toilet or in her trousers.
Squirming and trying not to breathe too deep, the Doctor’s eyes drifted hesitantly to the stairs. With a shaky whimper caught in her throat, she cautiously began to move, careful not to part her legs too far. Every step was a struggle, a fight to keep everything contained, and one she could feel herself losing. Tiny dribbles kept leaking out, no matter how much she tightened her grip, but thankfully, the TARDIS took pity on her. Once she crossed the threshold to the corridor, the door closest to her opened, revealing a bathroom.
Anxiety clawed through her stomach as she hobbled her way inside, the very sight of the toilet almost mocking. Another leak gave her little time to dwell of it, however, this one spreading to her trousers and dampening her palm. Determined to hold onto at least a single shred of dignity, she rushed to shrug off her coat, keeping one hand firmly between her legs at all times. Hurrying to win the race against her bladder, she tore off her braces and shoved down her trousers and boxers, so full and desperate she released prematurely, peeing a little on the seat in her rush to sit down. The mess was quickly forgotten, however, as her skin touched the porcelain bowl and at long last, all the liquid that had been tormenting her began to gush out.
“Oh!” she moaned, voice rising a few octaves as a wave of relief crashed over her, “Oh, brilliant!”
The sound of her stream splashing and spattering below her was music to her ears, the force of it leaving her body the most wonderful thing she’d ever felt. Hands on her knees, she leaned forward and moaned, eyes closed as a smile spread across her face. No less than a liter of pee left her body, taking several minutes before the last of it pattered out. Sighing blissfully, the Doctor opened her eyes, catching sight of the wet garments around her ankles. She’d have to wash those, and come to think of it, she could use a wash herself.
Grabbing a wad of toilet paper, she dried herself before standing up from the toilet, kicking off her trousers and boxers as she went to flush. Something caught her attention as she did so: a mirror, out of the corner of her eye.
Instinctively, she turned away, realizing then that it wasn’t peeing that was the source of her nerves. It was undressing, or rather, seeing herself undressed. It should’ve been obvious; even when trying on clothes, she’d avoided seeing too much of herself in the mirror. How was she going to feel when she got a proper look at her new body? What if it was too big of a change? What if she didn’t like it after all?
Biting her lip, she considered what she’d already put herself through, how close she came to disaster, and quickly made up her mind. Eyes still on the ground, she pulled off her shirts and bra, and turned to face the mirror. Seeing her reflection, her nerves quickly melted, turning instead into a grin.
“Oh…” she found herself saying as she stepped closer to the mirror.
Studying herself closely, her hands slid down her body, going over her breasts, the soft skin of her stomach, and finally reaching her vulva. Everything was different, more different than she was used to, but in an exciting way, not a scary one. This body was brilliant, beautiful even, and she longed to explore it more… once she washed off the drying pee.