Well, I know that a couple of my friends as well as me have had very heavy periods for a long time (a few months straight even) after restarting the pill. I think you're body just needs to readjust to the effects of the pill when starting it for the first time.. or starting it again after being off it for awhile. I spoke to my doctor and she told me it was normal and that my period would return to normal after some time... and if it didn't to let her know. As for heavy periods not related to the pill, I'm not sure if that is bad... you should check it out with your doctor.
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