Help implantation bleeding

So I had sex a week ago last Saturday night well since yesterday I’ve been having light bleeding not normal bleeding hi keep getting light cramps an my breast hurt an I feel sick to my stomach the bleeding I’m having is weird for me normally I have allllwwwaayyyysss had clots from the beginning-or even a day before my period my period is normally very heavy the first two days this is not i also normally have a lot of Black Brown an pink blood in alll my periods I’ve ever had I think I’m pregnant but I’m not 100% pic below