Please help!

So I recently had a miscarriage around Thanksgiving and I am wondering now since Aunt Flo supposed to be here the 11th or 12th it came a little early but also left early my periods usually last for days this week I started bleeding all of Saturday and half of sunday today is Monday and I am no longer bleeding can it be heavy implantation bleeding??

my lower back was killing me last night achey and crampy

Any similar experiences??

Should I test at home??

I had mirena iud removed late September 2015