http://www.fwradiology.com/fibrobrst.htm -some basic information about fibrocystic breasts. They're not harmful, most of the time, but breast cysts can be pretty uncomfortable, when they happen. The breast specialist may recommend ultrasound (a better diagnostic tool in younger women than mamography because of the density of breast tissue in younger women) or mamography or other screening tests to see what's there, or she just may recommend having more frequent clinical breast exams. While you're there, if you want, ask her to help you learn to give a proper self exam. We're often told to do so, but rarely shown how, or shown what a breast cancer lump might feel like (which is different from other sorts of lumps.)

I hope some of the stress is subsiding for you, and I'm glad you're developing a positive relationship with a health care provider.