Implantation? TMI no picture

Ellie • Engaged to my soulmate💏and newly a SAHM to a 8 year old boy 👶🏽 4 year old girl and my newest baby girl born 1/25/18👶🏽👶🏽🎀🎀 💕
So I am 9dpo and today I went to  the bathroom and there was literally only a spot on the toilet paper that was discolored. almost brownish. but so light, just not regular discharge color.
Does that sound like possible implantation? Can it be that small of an amount to where it is almost unnoticed?