Two periods

Haley • Dog mom to Ellie Bean. Whovian, Dragonborn and GOT nerd.
Long story short I was put on Birth Control when I was 15 because I would have two periods every month. They were very heavy and made me very ill. I have only experienced this a few times while on the pill but it's happening again. Has anyone else experienced this on a low estrogen birth control? Any advice?