My nipples hurt?

Melody • I love BTS, music, art, food and talking about everyday stuff :)

I was supposed to get my period last week but I still haven't gotten it. I'm 6 days late now. But I haven't been sexually active with anyone. And i know when you stress about getting your period, it can cause it to come EVEN later, and I know your breasts can get tender and hurt before/during your period. But my breasts don't hurt? Instead of my breasts, my nipples hurt, not exactly to the point where I feel like I'm uncomfortable or like I'm gonna die but they're very sensitive and hurt when anything comes into harsh contact. Is it normal for ONLY my nipples to be sensitive and hurt?