So I've been lost for months in the Darcy/Bucky tag of ao3 looking for a few fics that I had read before I had an account. Well, now I can't find them and I literally looked through ALL 106 PAGES OF BUCKY/DARCY ON AO3 and did not find them :(
Anogete wisely suggested I reach out to Darcyland and see if anyone knows any of these stories so I just made an account for this.
First one is a time travel fic. Darcy is friends with Steve in present time and unbeknownst to her, Steve knows she goes back in time and meets him and Bucky. So one day they go to the market and Darcy comes across this necklace that (I think) has an infinity stone or something and is drawn to it. Steve knows this is when she disappears so he has secretly prepared her for her trip by providing her with cash and I think papers in her coat pocket. She goes back in time and meets pre-serum Steve and Bucky and realizes Steve knew she would go back and uses the money to help out the boys and spoil them buying them food and stuff despite their protests. Can't remember if it was wintershock or shieldshock or both though. Pretty sure it was wintershock.
Second one I'm almost positive is a series. The first one starts out at Coney Island/carnival/fair with Darcy meeting Bucky because she accidentally threw up on him on the ride. She's super embarrassed and is apologizing a million times and Steve is like haha payback is sweet. Despite this, they begin to see each other and its kind of AU but Bucky still has his metal arm. He takes her to the VFW for their first date and takes her dancing and she is impressed by him. They continue to date/fall for each other but Darcy doesn't know anything about Bucky's true life. Later on in the series Bucky ends up with hydra I think he turned himself in to protect Darcy and they end up wiping him until he forgets Darcy. Then they send him to kill her. He finds Darcy and goes up to her all charming like, has no idea that she knows him. Darcy knowingly leads him to her hotel room and admits that she knows he's going to kill her. But she has one request before he does, he looks a lot like her ex, and she misses him so much, could he just pretend to be her lover and give her this one last time? Bucky finds it kind of odd but agrees and while he sleeps with her gets this feeling of de ja vu like he knows her from somewhere or should know her. Before he kills her Natasha bursts into the room and saves her. Also in the series I remember it talked about a relationship Bucky was in during his time and the girl's name was Aurelia and she was Romanian. I think they were going to get married and she was the only woman Bucky truly loved before Darcy.
Third one (and lastly) Darcy is from Steve and Bucky's time and she ends up falling for and marrying Bucky. I think right before/after Bucky falls she gets kidnapped from their apartment and brought to Europe. They inject her with a version of the super soldier serum but she doesn't know. Ends up on the Valkyrie with Steve and red skull show down. They both go down with the plane and end up frozen and events happen like in Avengers where they both wake up in the fake room with the baseball game playing on the radio. When they escape and get cornered by Fury he offers them an apartment and they move into a 2 bedroom apartment. Not sure if at this time or maybe she already knew but Darcy is pregnant. Steve helps her out and she gives birth to a boy she names after Bucky just like they had talked about before. But soon the baby gets kidnapped by hydra and Darcy is grief stricken at the thought of having lost her husband and her baby. Meanwhile at a hydra base the winter soldier hears a baby crying and goes to investigate and finds a baby boy with inadequate clothing for the temperature shivering and crying. He tries to comfort the baby without knowing why, not knowing it was his own son. That's all I remember.
Anyway so so sorry for this unexpectedly long post! I would be so grateful if anyone could point me in the right direction! Thanks in advance and stay awesome y'all!