一卵性双生児を出産しました。

I delivered identical twins.

「トムとジョンって一卵性双生児とは聞いてたけど、本当によく似てるよね？」「似てる似てる。親にも時々間違えられるって言ってたよ。あの二人はほんと、已己巳己だよ」

"I heard that Tom and John are identical twins. They really do look alike, don't they?" "Yes, they really do look very similar. Even their parents say they get confused sometimes. Those two really are very similar, aren't they?"