Hi,

For the last 4 months I have noticed a sudden change in my breast. They are round and a lot more full, but hard on the inside on both sides and evenly on both sides like some on but a river stone with a foam surrounding in my breast. (it is a bit embarrassing but my boyfriend had made a comment that they were hard as well.) I am almost 20, and my boobs have grown twice already. They don't hurt and I don't have any irritations or anything. I am not pregnant and never have been. 

Is this normal? Should I be concerned?