hi I'm 23 years old and normally my periods last four days and are a continues flow of heavy bleeding. This month it went from light pink spotting to dark brown spotting and I only seen it when I wiped nothing ever got on the panty liner. It's confuseing because it's that time of month for me. And I've read implantation bleeding happens before your period... But this kind of spotting has never happened to me. Any help would be great! Thanks