Longer than usual period

Alondra
I started my birth control the first day of my period which was on a Tuesday and I'm still bleeding. I'm not clotting anymore, that ended a few days ago. This has never happened to me. This isn't my first time being on birth control, I took it before but forgot to get my prescription refilled so I stopped taking it all together. It's the same pill I took before. Maybe I'm just bleeding from starting it on a Tuesday instead of the sunday after my period, but I read the med packet that comes with the prescription and it said to take it either on the first day of your period or the sunday after. Has this happened to anyone else?