My last period was April 14th I started taking birth control the following Sunday but only took 1 week and stopped Bc of bad side affects. My period is now 7 days late I did have unprotected sex but I took a test 2 days ago & it came back negative could taking only 1 week of birth control delay my period for this long or is there a chance I could be pregnant? I am worried Bc I have been taking pre workout before I go to the gym please let me know what I should do! Thanks