So a few weeks ago while writing a chapter for my previous multi-chapter fic, i had this idea of what if Barry got stuck in the past. Now, in the other fic, it was just for a day, but what if this time it takes a little longer? ;)

Barry and Caitlin were out in the field trying to stop cicada once again.

Caitlin was keeping the dagger under control while Barry was fighting him.

It was going pretty well until cicada managed to get his dagger, Frost was able to duck on time but Barry wasn't so lucky, as the dagger flew into cicada's hands it hit Barry's shoulder and left quite a deep cut.

Cicada escaped and left Barry standing there, he was vibrating uncontrollably and then started to run around but couldn't stop.

"Barry, are you okay?" Frost yelled over the sound of speed lightning.

"I can't stop. I need you to slow me down." He yelled back while trying to not run into a wall.

"And how do you expect me to do that?"

"Hit me with an ice blast, that should do the trick."

She looked quite worried. "Barry, I don't want to hurt you."

"You won't, I trust you." And with that Frost raised her hand and shot at him, making him come to a complete stop. "Thank you." He whispered.

But before anything else could happen he started vibrating again. "What now?" She asked panicking.

Barry had to think for a moment. He put her hands on his shoulders. "Keep a steady stream of ice coming, that should keep me from speeding up again.

This time she didn't hesitate and did as instructed making the vibrating stop.

"Cisco, we could use a breach." Barry said into his comms and a second later a breach opened in front of them.

Back at the lab, Frost was telling Cisco how to operate the medical equipment as she was busy making sure Barry didn't speed off.

"So, what's going on?" Barry asked shivering slightly, he hadn't been so cold in such a long time. Well, he was always a bit colder since he started living with Caitlin but it wasn't this cold.

"It seems that when his dagger sliced you it flooded your system with dark mater and that is now causing your powers to freak out a little. It should wear off pretty soon." Frost explained after Caitlin told her what any of the things on the screen meant.

"So you're going to have to keep me cool until then?" Barry asked.

"Not exactly, I believe that if I freeze the wound it should counteract the dark matter to some degree." She said as she concentrated a stream of frost onto the wound.

"Ice sutures... neat." Cisco said as he was staring with amazement.

"There, that should do it." She said as Caitlin took back control.

Barry got up and pecked her lips. "Thanks honey."

She smiled but was soon horrified as Barry started to vibrate again.

Before he could say anything however he started running and vanished. Leaving Caitlin and Cisco in shock wondering what happened.

Barry came running out of a portal and ended up at the precinct.

It looked different then how it looked currently but still familiar. He went up to his lab and found Joe.

"There you are, I've been waiting." He said.

"Waiting?" Barry said confused. "For what?"

"To go over your mom's file?" Joe chuckled at Barry's confusion. "You okay?"

Barry was thinking and an idea shot into his mind, he really hoped this didn't just happen. "Uh, yeah yeah. By the way, what's the day today?"

Joe frowned. "Tuesday."

"No no, I mean the full date."

"Uh. October 21, 2014. Barry are you okay?" He asked.

He put both his hand on the back of his head and sighed as he realized what just happened. "Yeah, yeah I'm fine. I just need to take care of something. I'll be back later."

And with that he flashed off and tried to open the speed force to get back to his time. Though he was unable to open it. He came to a stop and felt an extreme pain in his shoulder.

He pulled his shirt down a little and noticed some of the ice what coming loose. With that came another revelation. "This won't let me into the speed force." He thought.

He decided to go look for himself and ask for help, he knew he could get his younger self to help him open the portal.

He looked everywhere and couldn't find him, so he came to the realization that he had merged with the current timeline.

Since he couldn't get back in any way he decided to just live his life and go back once he healed. All he had to to was remember everything he did. Easy right?

At star labs everything was going well until they started talking about turning the particle accelerator into a prison. And when he saw the look on Caitlin's face as she was remembering the night of the explosion, his heart shattered into a million pieces.

"Caitlin... did you hear me?" Wells said pulling her attention from her thoughts. "I'm going down the accelerator ring."

Barry felt bad and remembered how relieved she was when he asked her to come with him. Of course he was going to ask her again, but this time it wouldn't be for the same reasons.

"Actually, Dr Wells, I could use Caitlin's help identifying the poising gas." He said.

"Let's go." She nodded with a faint thankful smile.

They started heading towards the exit when Barry pulled her arm and looked at her. "Barry, are you okay?" She asked.

"Yeah, I'm fine. It's you that I'm worried about." She was a little shook that he worried about her. It made her happy though, a happiness she couldn't quite explain.

"Yeah, why wouldn't I be okay?" She asked.

"Cait...lin, I know how much Ronnie meant to you and I couldn't help but notice how you reacted earlier when Wells mentioned the accelerator."

He sighed and put his hand on her shoulder. "What I'm trying to say is that if you ever need anyone to talk to, I'm here for you."

She was taken by his words and nodded in silence, the look on her face telling him everything he needed to know. She knew he cared about her but this still took her by surprise.

After getting to the station Barry didn't bother taking her to the main area and just went straight to his lab. He knew captain Singh wanted some documents from him and already got them ready.

And as if on queue he came walking right in and before he could open his mouth Barry handed him the files.

"The fiber analysis for the Olaf case, sir." He said with a small grin that was barely noticeable.

Confused captain Singh accepted the files. "Thank you, mister Allen." And without saying anything else he left.

"How did you know what he wanted?" Caitlin asked also visibly confused.

"Just had a hunch." Barry smiled awkwardly.

They started working on analyzing the gas and Barry remembered asking about Ronnie, however he didn't want to push anything after already asking her before.

They worked in silence and soon enough the radio call stating that there was a toxic gas attack at the mall came in.

Barry shot up out of his chair like last time, making a b-line for the locker in which he kept his suit.

He thought about the woman he wasn't able to save last time because he was too slow but now, as he had gotten faster, he knew he could make it on time.

"Barry." He heard from behind him. "Barry, it's not safe."

He stood there for a second, remembering how much he scared her leaving, but he knew that if he left, he could save a life.

He turned around and with a calm and caring voice said. "Cait I'm sorry, I have to go."

He ran to the mall and headed straight for the elevator, unlike last time he didn't need to ask for directions but he still didn't make it on time.

This time however he wasn't going to go after Nimbus and instead extracted a sample of the gas from the woman's lungs before heading back. Flashtime was useful as it tuns out.

He flashed into the cortex and was given a few surprised looks.

"What happened?" Cisco asked.

"He killed a woman, I managed to get a sample of the gas before I left." He said as he put down a vile on the desk.

"I'm impressed, mister Allen." Dr Wells said grinning like he knew something was different.

At that moment Caitlin came into the room and immediately ran over to him and hugged him. "Thank god, you're okay." She whispered.

He hugged her back and for a moment he thought of how nice it felt to hug her. Even if this wasn't his Caitlin, it still felt the same.

A few hours later Barry came back from the CCPD and noticed her sitting on the treadmill.

He sat down next to her. "I'm sorry, I didn't mean to scare you like that."

"It's okay, I get it, you had to go." She said. "It's just, that's the last thing Ronnie said to me that night."

"I'm sorry Cait." He said as he took her hand.

She was surprised but she didn't pull back. She leaned in against him and put her head on his shoulder. "For so long I've been terrified of going into that hole."

He let go of her hand and wrapped his arm around her holding her as close as he could. "What if I went with you?"

They went down and as Caitlin was remembering the events of that night she broke out in tears.

Barry came up behind her and hugged her.

During the hug, something fell out of his pocket, it was his flash ring.

After it fell Caitlin noticed it. "What's that?" She said as she reached out to pick it up.

Before she could reach it however, Barry grabbed it at super speed. "Nothing, don't worry about it." He said nervously.

She was about to scold him but Cisco's voice sounded over the comms, just on time.

Barry let out a sigh of relief and headed for the cortex.

Later that day after having successfully defeated Nimbus, Barry was sitting in the cortex, alone.

"Hey." He heard a familiar voice from behind.

He turned around and his face lit up like a Christmas tree. Of course there was only one person that could trigger this, Caitlin. "Hi." He said in his usual dorky tone.

"Uh, I... I just wanted to thank you for today." She said shyly.

He smiled. "Any time." He went over to hug her but she accidentally hit his shoulder where he was injured. He flinched back in pain.

"Oh my god, I'm sorry, are you alright?" Caitlin said already trying to lift his sleeve to check what was going on.

He stopped her just on time. "Yeah, I'm okay. Just a bruise."

She looked at him with an unconvinced look but before she could ask anything else, he changed the topic.

"Anyways, do you want to go get something to eat? I'm starving." He said nervously.

She hesitated for a moment but smiled. "Let's go."

Well, a little introduction of where i will be going with this. I am thinking of doing chapters based on episodes 7,(9?),10,11,12,(15/16?),19,20 and 23. Quite the road ahead, isn't it? Of course

I hope you liked it. :D