i've been on loestrin24fe for about 8 months now, and most of my ...

i've been on loestrin24fe for about 8 months now, and most of my periods have been annoyingly unique. the first period was normal, the next only lasted a day or two, the following lasted 5 or 6 days with bad cramps...the fourth month i bled about 19 days total, mostly breakthrough...the fifth and sixth months were pretty much norma, lasting about 4 days, but accompanied by horrible cramps. the seventh was several days late....now im in the second week of month 8's pack and am having heavy breakthrough bleeding and bad cramps...is this normal at all? i also get horrible body aches during my period. should i switch to something different? i went on birth control mostly to regulate my period and ease up on the debilitating cramps, but it has only made both problems worse! please please give me adviceeeee! i used to take depot provera, and i didn't have a period or anything for almost 3 years...however, i got osteoporosis from the damn thing, so i don't think i should go back. advice?!!?