when will it end?!!

Gigi
I got on the implant a few weeks ago and on the third ish week of having it I started my period. It's been a month now. 
There's barely ever any lining when I examine, maybe a penny's worth every 5 days or so. The flow is not drastic, but I have to wear a tampon 24/7 or I will ruin underwear. Please help. Is this normal?