Bleeding ? (tmi)

kmig25

So im a little over 2 wks pp and i stopped bleeding about a week after my section but now it came back with a vengence. Its like a dark burnt red brown color. I was told the bleeding could come back after 2 wks but i wasnt expecting the gushes again and soaking a pad within 2 minutes. Is that normal? Has anyone experienced this? Should i call my ob?