I have been on birth control for about 6 months now sometimes i take it a hour or 2 late because of work.. I had sex the 19th 24th and 29th... i took a plan b pill on the 21st 24th and 29th the condom broke when i had sex the last time and there is still enough time to buy another plan b. Should i buy another one so ive taken 2 after the condom broke or should only 1 pill be fine? Please help:( and how long does plan b stay in your system? Is it bad to takw more then 1 pill within 72 hours of having sex?