It's actually "I want to give birth because it's your baby". Then he adds the baby is going to be cute and good. So it's not that he thinks the baby will be cute and good because it's Keith's.
You're doing a fantastic job. Never ever think you are a disappointment, you're doing us such a massive favour. Plus, everything was understandable, really. Thank you so much.
It must mean something if Armin is there with his body.
Zeke is not. Eren is not. They are likely both prisoner of Ymir and she's controlling their bodies. (Or maybe only Zeke, and Eren is actually helping her). But Armin is there with his body. Sure as hell it means something.
Look very closely at how Mikasa is dressed in the last scenes of her "vision". How she cradles Eren's head and so what Eren is seeing.
Now go back to chapter 1 and look at one moment before Eren wakes up under the tree...
Also, apart from the slight difference between "later" and "soon"...
Not to mention the comment about the hair... Fuck, I'm going mad here.