Clearly egg white type deal in my "period"

I'm on the 2nd day of my period & it has been way lighter than usual. I usually am heavy & bleeding out of my uterus.
well I started yesterday and when I first saw it, it looked light pinky and extremely glossy.
Well I had protected sex for 2 days in a row end of July. And even thought it was protected, I started to get scared.
It's been light but turned red. Also when I wipe the blood comes like dripping/shoots out (this usually happens on my period). Tmi but when I went to check just now, I literally accidentally splattered two big dark red dots on the restroom floor 😷 .. Disgusting I know. 
Well now I'm just wondering if this is my period or like. Implantation bleeding? :(  I don't know what's going on. Also I've been having cramps but not my painful period cramps but still are kinda aggressive and uncomfortable. 
I just don't get why it's not as heavy as it usually is.