Chapter Text
Sometimes, unexpected things happen.
Frisk had gained a little weight. It caused no alarm in the beginning, they were growing accustomed to surface life once again. Eating a lot of different things, showing Sans all the food that was unavailable underground. They had simply began overeating. Frisk would start going for a jog every other day. No problem.
They felt a little sick from time to time, again, this caused no major alarm. The stress of helping humans and monsters cooperate was immense sometimes. Both parties were quite stubborn in some regards, but steps had been made towards a brighter future. They would feel better soon.
The real alarm bells rang in the distant corner of their mind when they were suspiciously light. Frisk still silenced them. Sometimes cycles were different. Sure they had gotten lighter than usual, perhaps from stress again. Periods could be very finicky beasts. They ignored it for a month.
And another.
And another
Frisk was now full blown late. Their menstrual cycle was completely absent. The alarm that they had so desperately tried to silence was now ringing full blast in their head, making them dizzy.
On a sleepy sunday they sat alone in the bathroom, leaning against the toilet.
The immediate feeling of nausea and dizziness had woken them up, luckily, this was early enough that Sans would never be awake. Not for a few hours at least. They had time to figure this out.
Crimson eyes filled with all sorts of confusion and panic.
Counting days, remembering months.
They had been light for three months and late for one. Frisk couldn’t be pregnant. It was an absolute impossibility, Sans wasn’t human. He was made of magic. They couldn’t procreate.
Frisk stripped themselves of their nightshirt and stared at their reflection in the full length mirror that hung from the bathroom door.
They had gotten slightly thicker.
That couldn’t be the beginnings of a baby bump.
Not even possible.
How?
Of course they didn’t have a test in the house. Why would they even think to keep one around? This. Was. Impossible. Would a test even work? Hopefully. The hormonal changes would hopefully be the same.
More panic, they slowly set their hand over the small bump. Slender fingers tracing around it. Frisk couldn’t be seen going to get a pregnancy test. Most humans and monsters knew who they were. Knew it was impossible for a monster to get a human pregnant. The rumors of infidelity would reach Sans. Gossip would break his heart.
Would Sans think that Frisk was unfaithful? Would he hate them?
A tear rolled down their cheek. They had to be sure before they told him. They needed the truth to smack them in the face before even they believed it.
Slowly creeping back into their room they hunted down some clothing, the only thing open this early on a sunday was a small 24 hour convenience store several blocks from their current abode. Donning a pair of sunglasses and their hair up in a bun they slipped out of the house unnoticed.
The store was empty much to Frisk’s relief. They only thing they had to worry about was the redheaded human cashier who leaned sleepily on the counter. Lazily scrolling through her phone; a cheap sounding pop song humming through its speakers. She didn’t look like she cared too much about what was going on around her. Only acknowledging Frisk with a nod and a yawn.
Frisk was on a mission, hunting through the aisles of odds and ends until they found the small section with random bits and pieces for sexual health. Condoms, pregnancy tests, feminine products and the like. Scanning over the packages Frisk decided on the most reliable looking one and briskly walked to the counter.
The cashier raised an eyebrow, green eyes glancing over Frisk once or twice before scanning the item. “I ain’t no judge,” she shrugged as Frisk hastily put the money in her hand, grabbing the item and leaving before they could get their change. The girl shrugged and returned to her phone.
Home was still quiet. Frisk peered into their bedroom, Sans appeared to be very much asleep. A sigh of relief escaped their lips and they returned to the bathroom, closing the door quietly.
Two lines is yes.
One line is no.
Waiting. The waiting would kill them. To pass the time they pondered how they were going to hide the package. If this was all for nothing they couldn’t leave it in the open. Not wanting to plant even a seed of doubt in Sans’ head. They would never be unfaithful. They loved him with all their heart and SOUL. No human or monster could ever pry them away, not even death itself.
Enough time had passed.
Frisk almost didn’t want to look. What if they were just being stupid? What if there was another, more reasonable, explanation for all of this? They would look like a complete idiot. Feel like a complete idiot. Taking a deep breath they picked it up. Hands shaking.
Two.
There were two lines.
Frisk couldn’t breathe. All logic and reason was gone. This didn’t make sense. This was impossible. How in the world could they possibly be pregnant? What were they going to do? What would happen to them? Could… Could a child even survive?
They cried. Quietly sobbing into a towel. Fear. They were so afraid. They had to tell Sans. They couldn’t hide it. If they were in fact four months pregnant they would start to show soon. Had Sans noticed the bump? Did he just not think anything of it?
Frisk splashed their face with cold water. They needed to gather their resolve, their courage. They had to do this now. It was too late to go back, too late to change anything now.
This was happening. They were going to have a baby.
They tiptoed into the bedroom and approached their sleeping skeletal husband. Words caught in their throat as nerves held them back. Maybe they would wait until a better time, go make breakfast or go clear their head. As they turned to leave his hand caught their wrist.
“Where were you Sweetheart?” By the looks of it he hadn’t been awake for long, but enough to notice Frisk had been missing for a while.
“Sans…” Frisk bit down on their bottom lip, unsure how to proceed. A deep breath. Inhale and exhale. Now or never.
They slowly knelt onto the bed beside him. Rather than using words, they took his hand and placed it over the lightly defined bump, “It’s yours.”