Arm Implant BC

Quinae👑💕

So I'm on BC and everything is fine. When my period comes it's usually light and lasted 4-5days but this time it's been waaaay longer. I've been on my period for damn near a month and counting.. HELP! What should/could I do to make them stop? Is this normal? I've been on it for a year now. When my periods are done they don't come back for months. I like the BC but I'm not with the bleeding for months thing.