Rashi

in which I was to be born This is a future expression, that he was saying, “Would that the day in which I was destined to be born be lost, and then I would not have been born.”
and the night That too should have been lost.
when one said that the reporter, upon whom it was incumbent [to report] would say.
“A man has impregnated.” That my father impregnated my mother. Concerning a female, it is customary to say הרתה, she conceived, and concerning a male, it is customary to say, הורה, he impregnated the female.
and the night when one said This is one of the places where Scripture abbreviates its words because it is unnecessary to explain who [the subject] is, and the expression means, “the sayer said.” [Similar to this is (Amos. 6:12), “Will horses run on the rock, or will one plow with cattle?” He should have said, “Will a man plow with cattle?”] However, our Sages said, “The angel appointed over conception is named Laylah.”