This is set at the end of episode 14 - The Lost Generation, maybe something that could've happened? Hope you like it
Lucy was so relieved to see Wyatt – the worry of going on missions without him and what he was going through after being hauled off by the NSA had been taking its toll on her. She listened and contributed to the plan they formulated about what to do with the lifeboat. It was dangerous – but her whole life seemed to be a precarious tightrope walk with a high chance of falling into a dark abyss these days. She was so glad to see Wyatt; but should she tell him? This thought kept going round and round in her head (and was the reason the plan wasn't getting her full attention). Every time she thought she'd made a decision the nagging doubts would start again.
After much discussion, Agent Christopher deemed the plan good enough and made her exit, with a final comment about not jeopardising everything by getting caught together in the warehouse. The three time travellers looked at each other with grave faces as she left. Rufus was the first to move – his worry for Jiya and his family weighing heavily on him. Wyatt grabbed his shoulder in a parting gesture which Rufus returned.
It was just Lucy and Wyatt now, the former gnawing at her lip in indecision. Should she tell him? Hadn't he been through enough? But didn't he have a right to know? What if this were her only chance?
Wyatt made a move as if to go. "Wyatt, wait just a minute" Lucy said, her hand on his arm to stop him, decision finally made. He looked at her expectantly, his blue eyes fixed on hers. Lucy dropped her hand and took a deep breath.
"I – I know you've been through so much and I don't want to make things worse" Lucy paused for another deep breath "but there's something I think you should know"
Wyatt started to look uneasy, unsure as to what she was going to say, his mind exhausted from the myriad problems they were dealing with.
Lucy looked down at her feet – unable to meet his eyes any longer. "Wyatt, I'm pregnant. I know it was just that one time, and I thought we were careful, I'm so sorry, I didn't know if I should tell you or not but since it's yours I thought you deserved to know…" Lucy trailed off, her brain finally switching off the stream of information (her go-to response when stressed). She realised Wyatt hadn't said anything, and looked up at him. His face was a mask of complete shock. Of all the things he thought Lucy might say, the fact that she would announce she was pregnant had never entered his head.
The silence was too much for Lucy who continued "Wyatt? Please say something? I'm so sorry to dump this on you what with everything else that's going on but, but" she paused again, her eyes on him now "but I might not get another chance to tell you"
Wyatt, though still shocked, was finally able to get his brain in gear enough to answer her "Lucy, I don't understand – we've never been together – not like that. So how can you be pregnant?"
Now the shock was on Lucy's face, the colour draining from her already pale complexion to leave her ghost-white. "After I came back, after Flynn took me, after the murder hotel…just that one time…" she trailed off her eyes filling with tears.
"Lucy, I don't know what you're talking about – we've never..." he reached for her hand but she pulled away, her arms wrapping around her body. Her tears were falling silently now, the tracks glistening on her face in the warehouse lights.
"You went without me" she stated, her voice flat and emotionless. "You changed the timeline when you went without me to 1983" Wyatt put his head in his hands trying to think of a way to deal with this situation. "Lucy," he said, his head still in his hands "I'm sorry for that – you know I am" Lucy's silence caused Wyatt to look up.
"Lucy?" where was she? "Lucy!" Wyatt called louder this time, looking around for her. But Lucy was gone. He ran from the warehouse but there was no sign of her. Wyatt fell to his knees, his head in his hands again. What had he done?