Well, I can give you some advice.
All women are different when it comes to AF symtoms. With me, the breast get tender but they dont exactly hurt. I knew I was pregnant when my boobs were EXTREMELY hurting.
When your boobs hurt so much that you cant even take your bra off, I would considere that a pg sign. And when I say hurt, I mean HURT.
With me, I didn't exactly notice sore nipples but the pain in the entire breast was unbearable. And to touch them hurt. And for some reason, they felt alot more firm then soft.
Hope this helped. I think you should test, I'll kepp my fingers crossed for you!