PLEASE HELP ME!

Grace

Hi everyone imma try to make this short but please help... i am 15 i’m on birth control...my period should be in 3 days but 2 days ago i noticed a light pink blood when i whipped bow it it a little darker red...worried it’s implantation bleeding...scared out of my mind...he never ejaculated in me he always pulls out plus’s on the pill... also i am having really bad cramps (feel like period cramps) i am not having any other symptoms...no nausea or frequent peeing nothing. please tell me what y’all think!!