CONFUSED

so i took a pregnancy test on 10/6 and it came out negative, i just took the test and left it in my drawer. Its 10/8 and i was cleaning my room and all of a sudden the test has a faint positive line???? my period isnt due till the 10/10. yes ive had unprotected sex during my "fertile" time but we use the pull out method , should i test again or wait for my period?!!! help please