Breast pain, sign of pregnancy?

Richelle
Hi ladies!
My breasts have been hurting for a week now along with light off and on cramps. They are dense, heavy and really hurt. I went up a full cup size already. 
I typically get breast pain before my period (about 2-3 days) and cramps too. 
My period is due 7/26 and I feel like it might be too early to take a test. 
What do you think - Are these early signs of pregnancy or are my hormones off?