Red bruise around breast?

i have a red bruise around one of my breasts i am 11 started my term...and it looks kinda like a hicky...what could it be? if its a hickey, after your lover might be really good at it !
if it snot at hand is a condition called lubricant necrosis. could be a trivial trauma like form belt of just a shake, after a few days it looks red then bluish and it hurts a touch after a week of injury. nothing much to be worried.
it could freshly be from your breast growing.
If it dosn't go away near in a month walk see a doctor or talk to your mom. it could be something impossible.