When will they stop growing?
i always have slapdash pain in my breasts? could it be that they are still developing?
how much longer will they develop?
Answers: ably i cant say anything for sure because it all depends on your hormones and nouns to find out when they will stop growing. However since you said you got your period at 15 which is pretty in arrears, then your development is also slow, therefor i can read aloud that possibly when you are like 19 or 20 they should stop growing. But it still all depends.