Help! Period again 9 days after last one ended?!?

Today I appear to have gotten my period again even though my last one just ended a little more than a week ago. It's not light spotting, it's like a gush of blood. I have some cramping too, though not as bad as it usually is the first day. My last period was a little different, I got it like two days early (maybe 3?) and it lasted a little shorter than usual. I usually bleed 6-7 days. I'm usually pretty on time too, and my cycles are usually 26-27 days, but 25 is not uncommon, only occasionally are they 28 or more days. One other thing that was odd about my period this cycle is that I had decently strong cramping the day after my period ended.