How long will it take for birth control to be out of my system?

I was on aviane birth control for almost a month, I stopped taking it because of some major side effects I didn't like. Halfway into taking aviane, I decided to stop taking it. Then I started having break through bleeding, and started taking it again. Now I have stopped taking it 4 days ago altogether. I was wondering how long is it going to take for it to be out of my system? I am having major side effects from it, such as cant function during the day, and am really fatigue and tired. I have headaches really bad too. Any ideas on when it will be out of my system, and when will i have a normal cycle again?