Implantation bleeding

Michelle
So i am not due for period until october 10 on friday i started to spot brownish pink today is reddish but watery not like nornal period ... i have cramps but not like my normal period cramps... and have all the symptoms of pregnancy ... I am not sure what to think because my normal period usually only lasts two days three at max... and this going on since friday and today monday ... has anyone experienced this ?