As I said you imbecile, you absolutely cannot compare period nausea with morning sickness.
The first is rare and only affects occasionally a few percentage of women.
It is also caused by extreme pain so there's no way Kokoro would be "surprised" by her nausea if it were cramps related, since she would already be rolling on the floor in suffering before puking her guts out.
Morning sickness is NOT pain related, and occurs in the first weeks (4th) of conception. It's normal for women (+80%) to experience it, way fucking more normal than ever throwing up because of menstruation cramps.
Now, about your retarded assumption according to which "first period makes grills throw up cause I think it was implied in EVA"; go and ask the few women in your life if they all experienced puking during their first blood moon.
The answer will be "no you autistic faggot,that's absolutely not how women work, go get a gf you fucking creep,">>174153581
Get that dysphoria cured, hon ,before you end up on suicide stats