hi, I had sex for the first time on May 26, we didn't used protection, but he didn't finish inside or anything, I'm supposed to have my period today but I read that if the period is late is because I'm stressing to much over it or I'm being paranoid, I get the feeling that I'm gonna be on my period but it hasn't happend yet, I did a test to see if I was pregnant but it was negative, soo I'm not sure, is my period not here because I'm area sing to much about it or is there something else please help!!!