Question... Birth control relate

Okay so i got my last depo injection in April and for the last 3 weeks i have noticed my tatas have damn near doubled in size before the shot i had nothing like barley a but now there at a b idk if thw shot just stopped them and now that my body is trying to go back to normal if the girls are playing catch up or if this is even normal qnd if the swelling will go down or if this is possibly a permanent thing. Anyone been thru this with depo or pill or any advice on what it could be? Fyi i have not had a period since i came off either and was on the shot nearly 3 years. Help,please