implantation bleeding ??? plz help

IM FREAKING OIT , I had unprotected sex tuesday , wednesday , thursday and friday (he didn’t nut in me so he says) .. I forgot to take my bc sunday so I took two pills monday. my period is suppose to start wednesday . on thursday I bled alittle then didn’t on friday then I bled again saturday and now sunday. is it too early for implantation ?? or am I spotting before my period. I keep putting tampons in because when I wipe I think it’s my period but it’s not.. also I feel neusea but idk if it’s all in my head.