Well a week and a half ago i had really sore nipples and my breasts were really sore even to walk down the stairs but they were not sore to touch and the felt normal, but now they are not really sore Only when i run its really strange because when my period is due i usually get sore breasts get heavy and sore to touch my period is due on wednesday its really worrying me has anyone got any idea whats going on im 18.