Has anyone had this happen before??

Tuesday I started AF right on time, normal flow and cramps like no other which is normal. Day two was medium/heavy as well. Then day the it was really light and brown, basically just enough for a panty liner all day. This morning was the same but a half hour ago I feel like I just started my period over. I went to the bathroom because I could feel it coming and when I wiped it was a lot of bright red blood, my flow is heavy again and I’ve got cramps that are just as bad as they were on day one. Today is day four of my period and I was wondering if anyone has had this happen or if anyone knows why I would be starting my period over again while I’m in the middle of it???