Hiya,yeah, if this is your first ever month on the pill then im pretty sure you start on the FIRST day of your period. Im convinced thats what i did anyway. Then, after 21 days, you have a break for seven days. And you then start a new packet after seven days have passed, whatever state your period is in. (i.e, even if you are still bleeding, you must start again after seven days.)It all sounds complicated now, but before you know it, you wont even think about it.Also remember that some drugs can stop the pill working, including st johns wart.Goodluck,CLaire.XX