Personal question!!

Angel • Sun, Dec 14 • 19, Happily taken TTC#1 for me and #2 for him

So I have my period, I started last night. But now when I just went to the bathroom I'm not bleeding anymore but I'm still cramping. And It's really bad cramps. Does anyone know What's the cause of this? I really need to know! Because it happened to me last month too!