hi im lindsey.. i had sex last month at my ovulating time unprotected, &now this month i was expecting my period on the 4th but, on the 2nd i started very light bleeding it was light pink then went to brown & then back to very light pink& brown mixed. it lasted 6days & ive had severe mood swings to the point where my boyfriend doesnt even want to be near me,head aches cramping & nausea but havnt thrown up yet. & also a big change in appetite i get cravings but arnt as hungry.i am so confused if im pregnant or whats going on. oh &i took a pregnancy test the last day of the spotting and it was negative..so im SUPER confused! please help me.