For the pregnancy ask, I will not resist the temptation of asking about Reylo, but let's also throw in Tatsumiya and Idate :)
I think it’s going to be fun. Let’s try~
Reaction: First Rey would be very surprised. She was always thinking about finding her family but starting a family on her own? That thought has never crossed her mind. However, after the first shock she would be nothing but happy. After all, family has always been her biggest dream. On the other hand, Kylo Ren would panic. He doesn’t believe that he can be a good father, especially after what he did to his parents.
1 month: The force is strong and Rey can sense it. Probably it’s only her imagination but Rey feels as if waves of power were accumulating inside of her, recognizing her own force. Kylo Ren spends the first month worrying more than it’s necessary.
Food cravings: Yes, all the time! There are so many things Rey has never eaten and now, when she’s pregnant, she feels the urge to try all new tastes. Fruits, meat, spicy food. Something which looks like a watermelon served together with chilli pepper. Kylo Ren feels a little sick as he watches what Rey eats, however he does what he can to bring her everything she orders. Rey never fails to ask.
Mood swings: It irritates Rey so much… She is working as usual and then, suddenly and without any clear reason, she thinks about her family. It makes her remember loneliness, the feeling of abandonment. Tears just can’t stop falling. First Kylo Ren wants to help her but soon he realizes that Rey is only ashamed when someone sees her weakness so he pretends to not see unless she comes to him herself.
Sonogram: Rey tries really hard to act cool but finally she covers mouth with her hand to hide her laugh and emotions. Kylo Ren looks like a person who found himself in the room by accident… He looks blankly at the screen, finally realizing that he is a father.
Baby kicking: Both parents are extremely proud. Rey commends how their child is going to be a strong warrior while Kylo Ren is already planning the training sessions.
Water broke: I imagine Rey acting rather calmly. Sure, she is nervous, who wouldn’t be? But she has survived more extreme situations. Meanwhile, Kylo Ren gives orders to his people and plans everything. He feels better when he can at least pretend that he’s controlling everything.
At the hospital: Rey would be probably one of those mothers who decides to be silent during the labor because screaming is stupid. So yeah, she’s a soldier, she can handle it. Kylo Ren would walk through the corridor and after every Rey’s groan terrorize poor medical robots… He still needs to work on his temper.
Name: Luce (in the universe full of made-up languages, the Skywalker family seems to prefer simple and traditional names. Luce sounds well with Luke and Leia, being short and starting with “L”, plus Rey’s name comes from sun rays and Luce means “light”. I think it’s quite suitable?)
Parents reaction: Rey would be very tired and very happy, and Kylo Ren wouldn’t know how to react - should he be soft? Play the general? Finally, he screams at his people, telling them to leave, and takes daughter in his arms.
Reaction: I think Tatsumiya would feel very insecure, what can be a little surprising in her situation. However, she has raised Wadanohara like her own child, she’s already felt like a mother and didn’t plan more children. After some time she comes to the conclusion that Lord Meikai wouldn’t be happy if he saw her living only with the memories of the past, he would like to see her finding her own happiness. It makes her a bit calmer. When it comes to Idate… first he assumes that Tatsumiya is joking. Then, when he realizes that Tatsumiya never jokes like that, he goes hunt (for Samekichi) to organize his thoughts. Idate was never good at being responsible…
1 month: Tatsumiya doesn’t waste her time. As soon as she realizes that she is expecting an egg she starts to arrange the baby room, thinks about the names etc. She also refuses to quit her castle responsibilities. On the other hand, we know that Idate’s relatives are very family-oriented. I think it’s funny to imagine his brother, sister-in-law and niece coming to the Blue Sea to meet Tatsumiya, so Idate is forced to attend boring family meetings. Ah, Idate is also forced to quit smoking (that means, smoking far from the castle and trying to hide it from Tatsumiya)
Food cravings: Tatsumiya does everything with grace. She usually doesn’t ask for any specific food but when she does, she demands it very openly. Even if she smiles, Idate decides that it’s better to follow her orders. Well-behaved women are scary when mad.
Mood swings: Usually Tatsumiya is so calm and silent that when he raises her voice, everyone is shocked. She tries to control herself and apologizes every time something like that happens… however Idate knows. Well-behaved women are scary when mad.
Sonogram: I think it would be a very sublime moment for Tatsumiya. She would probably cry a little, say how happy she is. Idate would observe effects of the spell with interest and try to guess whether it is a boy or a girl. Then he would add that his kid is going to be strong and he can’t wait to teach them how to… play with food. Tatsumiya is not pleased.
Baby kicking: When Tatsumiya notices moves on the other side of the shell she is really moved. She would smile and talk to the egg about their sea and the beautiful world they are soon going to see… Idate also talks to the egg. For example, when he feels the kicks he says that soon he will show his child how to kick sharks… Yes, Tatsumiya is not pleased.
Water broke Egg hatching: As every tough man, Idate would be useless. We know that he can panic pretty easily, for example when he doesn’t have cigarettes, so I believe he would act confident until first scratches appear on the egg. He then tells Tatsumiya that she should take care of the rest and rushes to smoke… But Tatsumiya is a very serious woman, she knows what to do.
At the hospital: I imagine that stereotypical picture with a room for nervous smoking fathers. There’s so much smoke that it’s hard to see Idate’s face… Also, Wadanohara runs to the palace to help Tatsumiya and asks Samekichi to keep Idate company. Poor shark.
Name: Tasuku (first, it shares the first syllable with Tatsumiya’s name, two, Tasuku would be written as “to save”/”to rescue”, which is pretty suitable considering that Idate met Tatsumiya when he helped her fight Old)
Parents reaction: Tatsumiya is very happy, she can’t stop smiling. Idate is proud too. He wants to take his son but Samekichi screams that he shouldn’t be allowed near children.