Need advice & this a lil tmi

Kelss
So I've been on period since the 16th of this month & it's still here. I been on BC (depo shot) I missed my appointment to get it again .. I wasn't having periods when I got it just spotting every know & then. But my period has NEVER been this bad I've ran through 4 32packs of pads😩 it's been super heavy & staining my clothes. I don't see a family doctor so I don't know what to do besides go back & get the BC shot. Someone please help