implantion bleeding ???

I started my period on the 4th it was 5 days late but once it came it was fine. Yesterday I was super emotional and mad at everyone for no reason. This morning / overnight I started bleeding again. It was dark and watery. TBH it looked like old blood mixed with new blood. I plan on going to the doctor but I can't go till Friday. Anyone have this happen? I was thinks implantation bleeding but I feel like it was to heavy.

Also everything I see about implantation bleeding said it's after ovulation but i'm ovulating right now? Idk lol