Hi... I'm 9 Days Delayed Of My Period. I Have

Hi... I'm 9 days delayed of my period. i have always been taking my pills on different times and sometimes i forgot to take one pill on time and i'll take two on the next day (i know it was so wrong). i am supposed to have my period last october 27. then i had pregnancy test november 2 (after my badminton game) ... but it is negative. will that be possible that i might be pregnant? my husband and i have sex like every other day...