First period after miscarriage really heavy???

Yasemin • Married to wonderful hubby! Have two gorgeous girls 16 and 9. Trying for number 3.
So today I started my AF after my mc on 4/17/16. It's the heaviest bleeding I've had ever. I didn't even bleed this much during my miscarriages. It's really bright red heavy bleeding. Usually my periods are medium to light flow with majority of the time light. This is scaring me. Should I be concerned? Have any of you ladies experienced this???