Tmi- implantation bleeding?? I hope!!?!?! This is a first

I've never had spotting like this occur before - normally I don't "spot" at all. The thing that's throwing me off is my dates. 
When I wiped and then push TP "up" a bit  its Brownish color/slightly slimy. It hasn't progressed to more ... Ive been wiping like a fantatic checking!! Been experiencing MILD cramping last few days. Boobs a bit tender but not my nipples,etc