After a woman misses many active birth control pills, hormonal contraception alone is not adequate enough to prevent an unwanted pregnancy. Therefore, you could get pregnant. Nonetheless, it's not likely that you become pregnant in the second week of the cycle. This current lack of vaginal bleeding is probably not due to pregnancy but normal vaginal bleeding usually doesn't occur, either, if your stop taking birth control pills during the second week of the menstrual cycle. Vaginal bleeding can be provoked if you stop taking your pills during the third week of the cycle, however. You can continue taking pills but you should use a condom to prevent pregnancy. If you don’t get your period when you finish the pack you can take a pregnancy test.