11th day on period

Tori
I am 27 years old and have been on the pill for 13 years. I couldn't get a pack for a month and when I didn't get my period during my "normal cycle" I decided to take my new pack of pills when I normally should have. That day I started my period. I have now been on my period consecutively for 11 days. I don't know how to get it to stop. Please help!