As per how the manga goes, we know that Sakura kept track of Sasuke most of the time after he left the village. Shortly after Naruto’s marriage, Sakura went on to chase Sasuke. She met up with him and kept tagging alond chasing him even though Sasuke kept telling her to go back and stop chasing him. Obviously, Sakura won’t go back… You know how much she loves Sasuke. Karin confirmed that she was the one who delivered Sarada during her birth. So we can assume they had sex during their travels only. Sasuke would’ve given into the pressure and finally accepted Sakura as his partner. So yeah, there wasn’t much into it really and I don’t think they will show any more details about it I guess.
If you wanna read about Sarada, you can read a little about her here.
Sarada Uchiha (うちはサラダ, Uchiha Sarada) is a kunoichi from Konohagakure’s Uchiha clan. Because she grew up without having her father around, Sarada initially struggles to understand who she is or what she’s supposed to be. After meeting him with the help of Naruto Uzumaki, Sarada learns that she is defined by the connections she has with others and as a member of Team Konohamaru, she seeks to someday become Hokage so that she can connect with as many people as possible.
Sarada is the only child of Sakura and Sasuke Uchiha. She was born while Sakura accompanied Sasuke on his travels, and was delivered with the help of Karin in one of Orochimaru’s hideouts; as such, there is no record of her birth at the Konoha Hospital. After that, the family returned to Konoha to raise Sarada, where the two helped her learn to walk. During her father’s absence from the village while gathering information on Kaguya Ōtsutsuki, she became ill with a high fever and afterwards, began wearing glasses, which unknowingly were a gift from Karin. Due to the importance of the mission, her father wasn’t around much, and it is because of this that she did not know anything about him, including what he physically looked like as an adult.
Sakura did her best to comfort Sarada during Sasuke’s absence, assuring her that her father loved her and that, when he completed his important mission, he’d come home. When this conversation went on for too long, Sakura poked Sarada’s forehead and promised to continue them some other time. As Sarada’s parents continued to stay close to their own childhood friends, she ultimately got to know the kids of her parents’ respective friends very well. On the day of Naruto’s inauguration as the Seventh Hokage, she watched the ceremony beside her mother and Chōchō Akimichi.
As a child, Sarada was portrayed to be like post-massacre Sasuke: unfriendly, unsmiling and sullen, but this changed around the time of her Academy graduation. According to Naruto, her personality takes after Sakura’s, which he bases on the suspicion that Sarada is “scary” when she’s angry, indeed having somewhat of a strong temper, which flares up more often after her appointment to Team Konohamaru. In these and other moments of particularly strong feeling, Sarada often exclaims her mother’s characteristic “Shannarō!”. Anger aside, she displays a normal range of emotions, from laughing to crying to blushing in appropriate situations, contrasting with Sasuke’s typical stoic reaction to every circumstance. In most situations, Sarada is kind-hearted and brave, polite to others and considerate of her friends and family, wishing well for them and standing up for them when they need her. She doesn’t mind saying what she’s thinking, whether it’s a question she wants the answer to, an opinion she holds firmly, or a frustration she can’t let go of. Like Sakura, Sarada is quite well-read: she feels comfortable arguing the differences between a panda and a normal bear; and she is apparently the only participant in the Chūnin Exams to have heard of the book series called Shinobi Strategist Detective Story, much less read all four volumes.
Sarada is appreciative of Naruto for his help in mending her relationship with her parents, finding him to be kind and warm. She is quite interested in his Will of Fire, wherein he tries to form bonds with everyone (particularly villagers of Konoha) that he can. Because of Naruto, Sarada decides to make her dream to become Hokage, preferring the kind of life Naruto has to the life of her father. However, Sarada shares a complicated relationship with Naruto’s son, Boruto, although she is also interested in him due to their similar relationships with their respective fathers. The two ninjas are often at odds with the young Uchiha valuing the Hokage post while Boruto initially showing utter disdain for it, as well as the two usually argue and fight with each other for almost anything. Despite this, they are very close, deeply caring for one another’s well-being and actually supporting their dreams greatly.