Period or implantation? Yucky photo ahead!!!

Dusty
Hey guys i am like clockork the last 9 months 4 days 27-30 day cycles. Normal blood flow occasional heavy. Last month my period only lasted 3 days. No biggie right. Then yesterday i start bleeding 6 days early then expexted making this cycle only 21 days?? What the heck. And every time i feel moist all there is is this dark pinkish brown gunk that usually happens on the last day of my period like the old stuff. Barely any cramps maybe even none. Super tired three naps yesterday and today. Could this be the implant bleeding ive heard about or is it just a very weird period! Also i had like clear discarge like i do at beginning of ovulation when i wiped last night... another weird thing... im so confused. Ill be testing on friday to see anyways but its so abnormal. Is this something to worry about.