Implantation bleeding? or period? or what?


hi guys!! i have never experienced this before & was doing some research! today while at work i was feeling little cramps.. (usually my cramps are bad but this was nothing) i am no longer cramping. i went to check if i started my period early but, when i wiped there was hardly anything there!! it’s really light. i’m not supposed to get my period for another 10 days.. the toilet paper with the darkest stuff on it was me shoving it in there to show what it looks like!! any advice is greatly appreciated. thanks!!