She's been pregnant multiple times. There's even one scene titled "Getting impregnated by oji-san." I don't know what she does with the kids or if she just gets abortions.
She is never truly pregant. Some of the pregant endings are IF Ends. Some are just fake (Inflated womb filled with too much sperm) Getting pregant is just a talk. She is always able to take the medicine in the last minute. So don't take it serious. This is just a girl that can easily get pregant but will never get pregant.
Base +6, black_sabbath +16, Megaton +45, Artistica +8, 海想列車 +24