period or implantation bleeding?

so i thought my period was 2 weeks early but im not sure its my period.. im supposed to be ovulating right now, but i noticed in the toilet was a light brown/pink like liquid and when i wiped it also appeared on the toilet paper. also nothing appered on my pad the whole day but very light brown. the second day, it changed to a red color when i wiped but nothing appeared on the pad. later on during day 2, dark brown appears on my pad.. what can it be please help!!