One idea could be that Snape discovers Ginny is pregnant and he's initially in shock as it goes against all the norms of their relationship. He then decides to be there for her despite the potential scandal. Another could be Ginny trying to hide the pregnancy from the wizarding world for fear of how they'll react, especially given Snape's past and her own family's reputation.
Well, a plot could involve Ginny and Snape having to deal with the magical implications of the pregnancy. Since Snape is a potions master, he could be researching ways to ensure a healthy pregnancy in a magical context. Ginny, on the other hand, might be facing the internal struggle of whether to keep the baby or not, considering the challenges their relationship will face in the wizarding community.
A possible plot is that the pregnancy is a result of some kind of magical accident or spell gone wrong. Snape and Ginny then have to figure out how to deal with this unexpected situation. They may need to seek help from other wizards or witches who are more knowledgeable about such strange magical occurrences. As they go through this, their relationship could develop in unexpected ways, either growing stronger or facing more challenges depending on how they handle the situation.
A practical answer is Chapter 71, because it turns the idea into a concrete scene. The chapter opens with Shu Yan curled her lips with a hint of jealousy, "When can it be my turn..., adds pressure through The sun is so intense;
Chapter 97 is the strongest chapter-level answer because it starts from Suddenly, Jiang Li's livestream room was packed with people, and the... and follows through on And you believe what she says?.
Chapter 81 is the strongest chapter-level answer because it starts from Qi Tianyu, who chose curry beef rice, received a piece of curry and a... and follows through on The summer on the Southwest Plateau is no joke; the sun at three o'clock....
The best chapter pointer here is Chapter 90, "Are You Even a Woman?". It opens with Watching He Yun gradually take control of a tractor under professional... and closes on Jiang Li finally let go of Jiang Yan's arm..
The best chapter pointer here is Chapter 103, "Selling a Kidney to Repay Debt". It opens with Jiang Yan looked at Zhao Lang with suspicion, eyeing the dark substance in... and closes on Jiang Yan felt deep guilt welling up inside him..
Look to Chapter 115 for the clearest answer. It begins with Jiang Yan was woken by a loud crowing noise., keeps building through Annoyed, he opened his eyes and saw that the hen, which should have been..., and lands on [Pure bystander, wasn't Jiang Yan known as a notorious playboy?.
Look to Chapter 125 for the clearest answer. It begins with Next, it was Qi Tianyu's turn., keeps building through Although he didn't know what Jiang Li had chosen, just from her recent..., and lands on He deliberately chose the most inconspicuous wheat seeds..
The best chapter pointer here is Chapter 154, "He Came, Bringing with Him the Bastard Game". It opens with Hahaha, I'm dying of laughter, Lili, do you really have to be so blunt?"... and closes on Helplessly, Director Sun could only grit his teeth and add another 5....
The best chapter pointer here is Chapter 147, "Jiang Li, We Are Going to Meet Again". It opens with Xiao Xueyi nodded in agreement after listening. and closes on Only Jiang Li glanced back at Director Sun, and then took out her own....
The best chapter pointer here is Chapter 87, "Temporary Replacement". It opens with Luckily, at that time, Jiang Li had already taken her pot of stinky... and closes on I'm driven crazy by him every day.] [+1 from above!.