help!!

i’m on birth control. my period ended 11 days ago, and now i just started bleeding again. i am extremely stressed because i’m

not sure if i just got a SUPER early period or if this is implantation bleeding? i’m not super educated about implantation bleeding, but i don’t know why i would start so early. can anyone help me out? give me some tips? explain to me how to tell the difference between implantation bleeding or if it was just an early period?? thanks