I just need some reassurance...or answers

Ashlyn
I've had white CM thats kind of clumpy or sticky, way more than I usually do right before my period. 
I had light pink spotting Sunday when I wiped and that was it, just that once.
My period was supposed to start Monday...it didnt. When I checked my CM a clump probably like the size of a pea came out, looked kinda like a booger lol
I had brown spotting yesterday when I wiped with a little bit of red blood streaking through my CM, but that was also it, just that once. 
I've had negative pregnancy tests everyday though. 
I don't understand what's going on...could I be pregnant? Is this implantation bleeding/formation of a mucus plug?