Why oh why oh why would you have unprotected sex with any girl never mind one you just met? Did you take sex education in your school? Surely you don't want STD's or a child that you are encapable of taking care of and bringing up to be a good citizen of this world. You don't have the common sense for such a thing so I'm glad she took the morning after pill. Now, you go out and get a good supply of condoms for the next girl you fk that you dont' even know.
Your stomach is in knots because your adrenalin is soaring because it realizes that you just dodged a bullet. This chick is nuts and you've allowed her to play you by taking her back after she was cold and calculating enough to just stop talking to you... that there alone should have been enough for you to not have anything else to do with her. Pornstar-esque sex is not love... it's lust and lust never lasts so don't speak to her ever again. When she tries to hoover you back for more of her dysfunctional horse shit, don't even respond to her manipulative crap. DO do yourself one favour before you cut contact with her. Make sure she took that pill.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion