Question about birth control and late period

[meiplejrt.livejournal.com]

I always had late period (every five to six months). So i went to o gyno two days ago and she gave me birth control pills. she told me to take 3 pills everyday (each after breakfast, lunch and dinner) and continue for one week. My problem is that i had my period right now (i.e two days after taking the pills). So should continue taking the pills for one whole week even while i'm having period now or should i stop it. Thank you so much! 
Btw, i'm 18, sexually inactive and was never on birth control before.