BC pill trouble

Pamela
I began taking BC pills on March 14 in hopes that I can change my period cycle. I was initially expecting my period March 21. My period was delayed on March 24, I began spotting and on March 30th, I started to actually bleed. I still am bleeding until today. I have finished the first BC pill packet and I'm currently taking the sugar pills. Has anyone had this experience? When can I expect to stop bleeding?