Ahem, don't hate me for this. Sometimes when a girl's breasts begin to grow, they swell. They can be easily damaged or they can bounce when running, thus causing them to hurt.
You could be finishing your period, so the swelling was causing them to hurt, or just the motion of jogging hurts.
You could not know how to breathe properly, therefore your lungs/chest would hurt because of lack of air (short breaths) or too much air (filling your lungs).