So confused, someone answer please😫

Okay well my period is 5 days late and today I got slight cramps and about an hour ago I started spotting very very light brown but it only appears when I wipe. Since Sunday my boobs have been SO tender and hurting and yesterday I noticed a lot of dark veins on my boobs, up my shoulders leading to my armpits, down my ribs (kinda underneath my boobs) and light ones on my stomach (kinda leaving to my pubic area) idk what's even going on!