Lexapro wont effect your period. i m going to private message you that tells you about the side effects of lexapro.

i am very concerned about you been 16 years old and drinking until your drunk.
you have to be very careful because your outcome couldve been far worse than that.
are you sure that was all the 24 year old did is perform oral sex on you while you were unsciencous?

As far as I know, Lexapro won't affect your period -- though stress tends to. By now, though, you probably already either got your period, or found out why you weren't getting it.
And btw, whether you are 16 or 30, drunk or sober, someone eating you out without your consent -- or, if it went that far, having sex with you without your consent -- that's rape. It doesn't have anything to do with being careful; rapists rape whether you are drunk or sober, and growing up doesn't change this. Just thought I should mention that.
Hope everything's alright with you, and good luck.

can you give us an update on how your doing. i hope he didnt have sex with you while you were unconscious and you got pregnant.