With or without?

Does implantation bleeding come with any symptoms? Im very confused right now. I dont know if i just had implantation bleeding, or my af is starting. I havent had any pms symptoms.. took some tests, all negative. But for some reason i keep thinking it is implantation!! Ive had sore itchy nipples, lower left cramping, horrible headache for about 3 days now, and diahrrea. Sorry TMI! But i just want some advice 😭