i need help to determine what am going through right now..am sexualy active for the past couple of weeks and were not using protections and lately am getting most of the symptoms of being pregnant .ive been urinating like crazy, i get headaches once or twice everyday, cramps so painful, sore nipples , no vomitting, back pain , eating a lot lately than i used too and i have irregular menstrual cycle ..i took a pregnancy test yesterday and its negative..can any one help me with this dilemma...