Hello Customer (name blocked for privacy), my name is Mandy. Thank you for using Just Answer.
It would be fine for you to go ahead and start a new pack of birth control pills. The rule of thumb most physicians use is to start the new pack the Sunday after you finish your period. However, you can start this on whatever day you would like, just make sure to start new packs on the same day every month. This prevents you from days without a pill. Missing days without taking your pills increases your changes of becoming pregnant if you are sexually acitve on those days and don't use a back up method. So if you start your new pack today, make sure you start your new pack next month on Friday also.
I hope this information has helped you.