Chapter Text
Stiles stood right in the middle of his living room taking in his surroundings, trying to keep his breathing calm. He needed to be calm so Derek wouldn’t freak out when he got home. So he would just listen for Stiles’ heartbeat and not run to see what was making his mate so distressed.. well excited really or anxious or delighted.
Just two hours before Stiles had a call from his doctor confirming that their third round of IVF had finally taken and he was now 100 percent pregnant with his and Derek’s first pup, something they had been trying so hard for since they mated four years ago; just after Stiles finished high school and presented as an omega.
For a whole year they tried none-stop for a baby but it never happened for them and every possible method the fertility doctors gave them wasn’t working. So they went the IVF route. The first try was so much of an anxious wait full of hope and excitement. The second the doctor hung up after telling him it had failed, Stiles had fallen to his knees and sobbed. Still in the same position when Derek came home from work at the station.
The second time Derek answered the phone, Stiles was in the bath relaxing after a hard morning training his spark with Deaton. Derek had knelt next to the bathtub propping his chin on the edge, his hand caressing Stiles cheek gently as he whispered the news to his mate. Wiping away the thick tears that slipped down his cheeks, promising they would keep trying as many times as it took.
This time Derek had taken the day off knowing the doctor would be calling today, but had been called to a pack emergency meeting at Deaton’s office a few hours ago. About half an hour before the doctor called with the news.
Stiles knew nothing could dampen the pure light inside him in that moment. He had squealed so loudly and excitedly when he hung up the phone that he accidentally let out a burst of magic sending little sparks of light all over the room, some of which still hadn’t faded, looking like little fireflies flitting through the air.
With his hands resting gently over his stomach the omega breathed easily, finally hearing the key in the door. His alpha was home. The excitement inside him pumped harder and harder. Until he heard it “STILES!” The urgency in Dereks voice shook him. Something was wrong. He was knocked out of his bubble of happiness for a second willing his legs to move hurrying toward Derek's voice.
Laying eyes on the alpha who was at that very moment ripping draws open searching for something.
“Derek? What's wrong? Is someone hurt? What’s happening?” He was starting to panic, usually Derek would be at his side in seconds calming him down but right now he was just focused on his search.
“Mom’s necklace Stiles! where is it?” He glanced up at his omega zeroing in on it around his neck. Forgetting he had given it to Stiles a little while ago promising it was his most prized possession and he trusted Stiles with it more than anyone else.
Stiles touched it gently, “I need it now” Derek stepped forward quickly looking like a man gone mad.
“Derek stop, you’re scaring me.” Stiles eyes were wide as he stepped back away from his alpha.
Those words seemed to sober the alpha who’s face softened as he approached his mate. “Sorry baby” he breathed, stepping toward his omega. “Deaton has finally done it, he’s found a way to send me back. Back to the night with Kate and the fire. I can save them Stiles isn’t that amazing I’m going to save my family, I’ll have a family again.” Derek’s smile was getting bigger by the second. But Stiles could feel himself dying inside little by little.
The omega let out a shaky “wow” and lent against the wall. What would happen to him? Surely if the hales didn’t die Scott wouldn’t get bitten and Stiles wouldn’t meet Derek and they wouldn’t fall in love and Stiles would be all alone and mateless and alone. wait... the baby.
Stiles tuned back in to hear Derek explaining how he needed something that belonged to his mother to get the spell to work, so he would be taken back to her specifically.
“What about me?” Stiles asked quietly, his hands shaking as he tucked them under his armpits. He knew he was being selfish but Derek and the baby were the only two things in this world that he cared about other than his dad.
Derek frowned at him tilting his head slightly. “What about you Stiles?” He asked as if Stiles had just kicked his puppy. The omega dropped his gaze a moment “You’ll forget me. I-I’ll either be here without you o-or I’ll snap back to being me ten years ago. Just a hyperactive spaz who never presented... you won’t look at me twice Der..” tears stung the omegas eyes now the nauseating feeling in his stomach growing worse. His alpha was leaving him.
“Stiles no matter what you’re my mate, nothing will ever change that. We are destined to be together. You know how much I love you omega never question that, I will find you in every life I live because you’re burned into my heart, my soul and you can never be removed.” Derek touched his cheek gently. “I’ll have my family back, they’re going to love you baby. I always said you and my dad would bond over his garden and my mum with your cooking. My perfect little mischief.”
“W-what if-“
“No what ifs baby just..” He sighed and looked Stiles in the eye. “This is happening and there’s nothing that could change my mind. I know this isn’t how we planned things but I have to do this.” Derek pressed a kiss to Stiles’ forehead before tugging the chain from his neck with ease.
“I love you Stiles.” Derek turned away and toward the door.
Stiles stood trembling tears rolling down his cheeks as the whole conversation finally caught up in his head.
“I’m pregnant.” He blurted, the words coming out like vomit. He couldn’t stop them. Which is exactly what also happened with the actual vomit that released from his mouth seconds later as he heard Derek growl.
Whining softly Stiles held his stomach trying to catch his breath, trying to ignore the sour smell that was filling his nose.
Derek stood stiff still facing the door listening intently. And there it was the tiny little thump thump of a growing being inside his mate. Slowly turning around he moved toward Stiles flinching slightly at the smell. Reaching Stiles he carefully lifted him up burrowing his face in the omegas neck letting him wrap his arms around his neck and legs around his waist.
Stiles couldn’t catch his breath, little hiccups coming out as he cried clinging to his alpha. “Okay baby, okay.” Derek soothed stepping further into their home. His heart swelling as he took in the faint scent of pregnancy on his little mate. Finally reaching their bed he sat in the middle rocking Stiles gently.
“We’re finally having our baby.” Derek whispered, Stiles sniffles pulling back slightly to look at him. “Th-the doctor said we can go have an ultrasound on Monday.” Derek’s hands had found their way to Stiles warm stomach. His skin was soft but firm, protecting their pup. This is what he could lose now. He could lose Stiles and their baby. Deaton said it came with a sacrifice but surely it wouldn’t mean this.. his old family for his new one.
Stiles long fingers were clinging to Derek’s shirt desperately as he spoke shakily about what the doctor said. Derek couldn’t help but smile listening to the wonder in his omegas voice.
They sat in the little bubble of happiness for a few hours, Derek transfixed with Stiles and his little stomach. While Stiles giggled and peppered his alpha with kisses. Eventually Stiles grew sleepy, “promise you’ll still be here when I wake up?” He softly asked his hand, gripping Derek’s tighter than either of them thought possible for the human. “If I could go back and save my mum and your family I would have done it in a heartbeat.. but now I don’t know.. just please wait just a little while longer.. I’ve wanted this for so long.. I-I just want it to last a little while longer.” Derek hushed him, running his fingers through Stiles’ hair.
“Sleep baby I’ll be here when you wake up. I love you both.” He pressed a soft kiss to Stiles lips as the omega drifted off into sleep.
The alpha took a deep breath.
Decision time.