Is nipple pain a sign of early pregnancy?

Chanell
My period isn't due for another 8 days, but for the past 2 days I've had the WORST nipple pain and breast tenderness. I've also had cramping. I usually cramp 2 and my boobs get really full about 2-4 days before my period. I've never had this happen 8 days before. 
I don't remember having nipple pain with my first pregnancy either. I want to take a test but know it's way too early.  
Have any of you had nipple pain during the very very early stages of pregnancy?