 [ Symptoms ] missed the 6th pill in birth control pack odds of becoming pregnant  i began my newest pack of birth control on sunday my husband and i had sex tuesday night i forgot to take friday is pill so i took two on saturday morning if i was not on any type of birth control i would probably ovulate sometime between that saturday and this thursday i hear that sperm can live between 3 to 7 days what would the odds be that i would become pregnant i have been on the same birth control aviane for a little over 2 years and have taken them consisently without forgetting [ Disease ] most helpful answer you will most likely be fine and not have an unintentional pregnancy i can not quote your odds since there are too many variables in that equation if you miss a period then you will have to consider a home pregnancy test or two but chances are you will be fine