Two months later

Gabby groaned as she felt yet another wave of nausea overtake her. She'd been sick non-stop for almost two weeks now, and she was over it.

"Gabby?" Antonio called from the other side of the bathroom door. "You okay?"

Gabby rolled her eyes, "Yep, I'm doing just great," she called back sarcastically.

Antonio opened the door to the bathroom and poked his head inside. "You really should see a doctor, Gabby. You've been sick pretty much all day every day for the past week. I'm worried about you, sis."

"I have an appointment later today," Gabby informed him. "I'm sure it's nothing, though. Probably just some food poisoning."

"Food poisoning doesn't last for almost two weeks," Antonio argued, following her as she left the bathroom and headed to the kitchen to search for some crackers.

Gabby shrugged. "Well, I don't know." She grabbed the box of crackers and turned to Antonio. "Will you grab some more crackers are your way home tonight? We're almost out again." Antonio nodded, so she continued, "I'm going back to bed until my appointment; I'm exhausted."

"Do you need me to take you to your appointment?" Antonio called after her.

"No," Gabby called back. "Just because I'm sick doesn't mean I'm helpless," she muttered under her breath.

Gabby returned home from the doctor's office in a state of shock, still trying to process the news she'd received. She took a deep breath, then picked up her phone.

"Hello?"

"Tonio, can you come home, please?" Gabby whispered.

"Gabby? What's wrong? I'm on my way!"

When Antonio flew in the front door, Gabby was sitting on the couch, waiting for him.

"Gabby, what's wrong? What did the doctor say?" Antonio asked, concern evident on his face. He sat next to her on the couch, wrapping his arm around her.

"Antonio, I'm pregnant," Gabby whispered.

"What?" Antonio exclaimed. "What do you mean you're pregnant? How? When? What about your aneurysm?" Antonio jumped up and started pacing the floor, muttering in Spanish.

Gabby sighed. "Antonio. Sit down. You're stressing me out," she told him, patting the couch cushion beside her. Once he was sitting, she continued. "You remember that trip I took to New York a couple of months ago?" she asked. Antonio nodded. "I slept with someone while I was there. The doctor said I'm about nine weeks along. That's why I've been getting sick all the time; it's morning sickness."

"You slept with someone? Do you even know who the father is? How did you not know you were pregnant?" Antonio blurted.

"Yes, I know who the father is," Gabby retorted. "And before you ask, no, I haven't told him yet. We haven't talked since we slept together, and it's complicated."

"But you do plan on telling him, right?" Antonio questioned. "Also, what about the aneurysm? Did the doctor say anything about that?"

"The doctor suggested that I fly back to the US for the pregnancy. He said that if I decide to keep the baby, it would be best for me to be back there and be monitored by a high risk OB. And," Gabby sighed, "if I decide not to have the baby, it will be easier to end the pregnancy there than it is here."

"What are you going to do?" Antonio asked.

Gabby shrugged. "I don't know, Antonio. I really don't. None of this was supposed to happen. But you know how much I want to be a mom." She sighed. "I don't even know if I should tell the father until I know whether or not there's anything to tell him. If I can't carry this pregnancy to full term, what's even the point?"

"Tell him," Antonio told her. "If it were me, I'd want to know, no matter what. I'd want to be there for you while you made that decision."

"I don't even know if he wants to hear from me, Antonio. This was supposed to be a one-time thing; the last thing he's expecting is for me to call him telling him I'm pregnant. How is it fair to disrupt his life for something that might not even matter in a few weeks?" Gabby questioned.

"Who's the father, Gabby? Is it Matt?" Antonio questioned, spitting Matt's name out like it was a curse word.

"No, it's not Matt. Evidently he's in Oregon, and has been for months now," Gabby laughed. "It is someone you know, but…"

"But what?" Antonio asked. "Who is it?"

"It's complicated, Antonio. It was just supposed to be a one night stand. Well, two night stand," she corrected herself. "He'd just gone through a bad breakup, and neither of us were looking for anything serious. We were drunk the first time it happened."

Antonio looked puzzled. "The only person I know in New York is Erin Lindsey, and I know you're sure as hell not talking about her."

Gabby laughed again. "No, it definitely isn't her," Gabby gasped between fits of laughter. Once she'd regained control, she continued, "It was Kelly Severide."

Antonio looked even more confused now. "Kelly Severide? As in Casey's best friend? Squad Lieutenant at 51? That Kelly Severide?" he asked incredulously.

"Yes, that Kelly Severide," Gabby confirmed. "He was in New York to-" she paused, trying to decide how much to tell Antonio, "take care of some personal business," she finished. "We happened to run into each other because we were staying at the same hotel. That first night, we'd both had a bit too much to drink, and we ended up sleeping together. The second night, we were completely sober, but we'd both had a really shitty week, so…" Gabby trailed off, figuring Antonio didn't need or want any more details than she'd already given him.

"Tell him," Antonio insisted. "He deserves to know. Besides, someone should be there with you. I'd go, but…" his voice trailed off, not needing to put into words the reason why him returning to Chicago was a bad idea. "When are you leaving?"

"Soon," Gabby sighed. "I have an appointment next week with a high risk OB in Chicago, so sooner rather than later." She looked up at her brother. "How am I supposed to tell him, 'Tonio? It's not fair for me to tell him over the phone, but I can't exactly just show up in Chicago and drop this bombshell on him."

Antonio looked sympathetically at his sister. "I can't tell you what to do, Gabs. You know Kelly better than I do. But if it were me? I'd want to hear this kind of news in person, rather than over the phone.

Kelly slung his duffle over his shoulder and trudged up the stairs to his apartment. It had been a long shift of nearly back to back calls and all he wanted to do was fall into bed and sleep the day away. Followed by, of course, his nightly trip to Molly's to drown his feelings in beer.

He stopped in his tracks as he neared his apartment door. Gabby Dawson was sitting on the floor next to his door, her eyes closed and her head leaning against the wall.

"Gabby?" he asked, quizzically, quickly moving down the hall towards her. He hadn't talked to her since they'd said goodbye at the airport, and while he was definitely happy to see her, he was puzzled as to why she'd just show up at his place. "What are you doing here? Is everything okay?"

Gabby opened her eyes and smiled tiredly, pushing herself to her feet. "Hey, Kelly," she told him as he reached her and pulled her in for a quick hug before pulling back and running his eyes up and down her body, concern evident on his face.

Gabby wasn't surprised; she'd lost nearly five pounds in the last couple of weeks due to not being able to keep anything down. Between that, her nausea, and her exhaustion from the flight, she was sure she was quite the sight. "I'm sorry for just showing up like this; I should have called…" she started, but trailed off as Kelly shook his head.

"No, don't apologize," Kelly informed her, unlocking his door, and ushering her inside. "I'm glad to see you. It was just a surprise, that's all. Why didn't you tell me you were coming to town? I would have met you at the airport."

"It's a long story," Gabby started to say, but cut herself off as her face grew pale, clamping her hand over her mouth and taking off for the bathroom.

Kelly waited in the kitchen for a moment before the sound of retching reached him. Concerned, he grabbed a glass and filled it with water before heading towards the bathroom.

Gabby's weight loss had been the first thing Kelly had noticed when she'd arrived. She'd always been in good shape, but when he'd run into her in New York, he'd noticed that she'd lost some weight and was even more fit since she'd been in Puerto Rico. Now, though, she looked too skinny, almost sickly. That, combined with how exhausted she'd looked and the fact that she hadn't called before showing up, had him extremely concerned.

"Gabby?" Kelly called softly as he reached the bathroom, finding Gabby leaning over the toilet. "You okay?" he asked, setting the glass on the sink before crouching down next to her and stroking her back. Once she'd stopped heaving, he handed her the glass of water, which she took gratefully.

"Sorry," Gabby apologized after she'd drank some water. Her face was still extremely pale, but some color had returned to it.

"Shh," Kelly replied, stopping her from saying more. "There's nothing to apologize for." His concern was evident on his face. This was not the Gabby he'd seen just a few short months ago in New York. That Gabby had been vibrant and healthy, full of life. This Gabby was pale and thin and looked like the slightest wind would knock her over. His mind immediately went to Anna and how she'd looked when she was going through chemo, which was nearly exactly the same.

"Gabby, are you.." Kelly started, but trailed off, not sure if he wanted the answer to the question he was about to ask. He took a breath and then asked it anyways, needing to know. "Are you sick?"

Gabby looked up at Kelly, surprised. That definitely wasn't what she'd thought he was going to ask, but then it clicked. Anna. Of course that's what Kelly would think of first. She immediately regretted her decision to just show up, especially looking the way she did. She hadn't even thought about that.

"No, I'm not sick," she rushed to reassure him. "Not exactly, anyways," she added.

Kelly felt a wave of relief sweep over him. He wasn't sure he would have been able to handle it had Gabby's answer be anything different. But then her full reply registered with him. "What do you mean, not exactly?" he asked hesitantly.

Gabby sighed. This was not how she'd imagined this conversation going. She'd really been hoping that he wasn't on shift when she'd stopped by yesterday afternoon and had been disappointed when his Mustang hadn't been in its usual parking spot and he hadn't answered his door. While her morning sickness lasted all day, it was definitely still worse in the mornings, and she'd been afraid of this happening.

"Kelly-" she started to say, but was cut off by another wave of nausea hitting her. She felt Kelly gather her hair with one hand as he rubbed her back with the other while she leaned over the toilet, retching. Nothing came up, of course, as she'd been unable to keep anything down in over twenty-four hours, and she cursed the nausea that was her constant companion.

As Kelly did his best to do what he could to help Gabby, his mind raced a million miles a minute. She wasn't sick, not exactly, she'd said. So it wasn't cancer or anything else serious. But if she wasn't sick…it hit Kelly then. His hand paused on her back for a moment and he lowered himself to a sitting position, leaning against the cabinet as he tried to process what he'd just realized. Gabby was pregnant. And she had shown up at his place. If he was right, he had a feeling he knew exactly why that was.