If your breast is sore it could still be your hormones reacting to your menstrual cycle. Females get them before, during and after their time of the month. So I wouldn't want to worry about it. However, if they seem to be really sore to the point of unbearable and uncomfortable please do go to your doctor immediately. And, as long as there is NO lumps or bumps like balls or stones around your breast you are fine.
