period, spotting or miscarriage?

As
So I've been tracking since December because my husband and I are trying. A week before I was suppose to start my period I bled a little no cramping, no bloating, no mood changes and now heavy bleeding (like I normal do). So the first thing I thought of was maybe I'm spotting? Well the next day still bledding but like I said no camping, no nothing just light bleeding? So the next thing I thought was OMG did I have a miscarriage? I have no ideas it lasted 4 days with no sysmptoms just very light bleeding. So did I just have a a weird period, was that spotting or did I have a miscarriage?