I have been experiencing the same thing . i got my period on nov/21/10 , ended on the 26th . and normally my boobs will get really hard and sore about a week before my period starts , then it goes away once im off my period . well now it has been 12 days sense i got off my period and they have been none stop sore , and i have no idea what is causing this . could i be pregnant ? took a test came out negative , but i know that its possible that i took it too early .. yes im a little moody , and hungry you could say . . any advice ? i would love to hear it ..