I second the GRRR to bleeding! I almost want to be pregnant again so I don't have to deal with it...ALMOST!
Mine was all over the place too when I started on the pill (only for 4 days) then came off and had another period, I bleed for 3 weeks straight, like a proper period. You should go to see your nurse/GP even if it is "normal bleeding" as I had to start taking the iron tablets again (was anemic when preg). It makes you feel so drained and yuck