TMI implantation bleeding?!?!?

Is this implantation bleeding? I've been like this for about 4 days, it varies from thick and dark brown to light pink with streaks of red. My period isn't due until 8/1. I don't have any symptoms other than PMS ( aching back & wanting chocolate ) so I'm hoping it's just spotting? 
***update this is what it looks like this morning, right now.