Irregular period..pls help

So Ive never posted anything like this before but really need opinions. Warning this will be TMI.. so I started my period a few days earlier than normal and it was been nothing but brown blood and was only heavy once and the rest basically medium and spotting. I understand this is old blood but this has been going on for 4 days when normally it's red and almost ovet and the Google search results are not very promising.

Can someone give me some peace of mind?? Or at least some insight??