"okay, i know a lot of young girls are probably very worried and are looking for answers. hopefully my experience using plan b will ease your minds. i took plan b 13 hours after having unprotected sex. abdominal pain, loss of appetite, depression, hyperventilating, anxiety, my nipples were hurting, i got a yeast infection, constipation, a withdrawal period caused by plan b about a week after taking it and yesterday i got my period! two and a half weeks after the one caused by the pills!"