since i was a preteen my period has always been 5 days regular-heavy bleeding. i am now 19 . the only abnormality my period does is switch what time of the month it comes. on january 20 i had unprotected sex . february i was expecting my period around the 15 but it came on the 10. it was 3 days long and very light/spotty. it happened again around march 9. ive taken 2 hpt and they were negative. am i trippin' and being paranoid or what? lol