so after i have finished my last active pill in the packet, the pill is effective in my system?

i take them at exactly the same time everyday, so no problems there.

thankyou for your fast reply!

Keep in mind that any medications - prescription or over the counter or illegal - can also interfere with the pill's efficacy. So again, even taking it as directed, it can be made useless by other things you are doing/consuming and you need to know that you cannot trust it to be infallible.