Help Me!

Alexa

So I’m 12 DPO and I should’ve started my period 3 days ago. My cycles are never off not even when I’ve have infections or anything. My nipples are so sore that even me brushing against them hurts like no other. Ive has no blood, (grossly even stuck a finger up there and nothing) all I’m getting is a white mucus. Feels like I’m leaking but its not blood, I’m just wet down there.