Hi,
Cysts are so common that almost every woman will have some during her lifetime.
Breast cysts can appear at any age, in teenagers as well as in older women.These cysts are related to the increasing hormonal fluctuations and the pain is particularly felt prior to the menstrual cycle and subside after the menses finish.When cysts are very large and painful,they can be aspirated by a fine needle,but cysts could also recur.
Avoiding caffeine, (Coffee,chocolate and colas) salty food and fatty food can lessen the pain considerably.
Unfortunately there isn't much one can do about these cysts,many young women have this problem. Seeing your doctor in 3 months is not too long await,and I am sure that something will be done if the doctor deems it necessary.
Take care and best wishes...