YOU SAID:
my sister is pregnant and i'm the father
INTO JAPANESE
私の妹は妊娠していて、私は父親です
BACK INTO ENGLISH
My sister is pregnant and I am a father
INTO JAPANESE
私の妹は妊娠しており、私は父親です
BACK INTO ENGLISH
My sister is pregnant and I am a father
You love that! Don't you?