last friday, i started my period, which is about 2 weeks early. i thought that i had been taking my pills regularly so i was confused on why i started early. this weeked, i had sex 3 times without a condom and he ejaculated in me all 3 times. last night (sunday night) when i took my birth control pill, i noticed that i was about to take my pill for saturday night. so sometime last week, i missed a pill and never realized it. i took 2 pills last night since i had missed that one sometime last week, which was in week two of my pills. could i get pregnant from having unprotected sex this past weekend and not knowing that i missed 1 pill a few days ahead?