Nipple discharge

I am 51. Ten years ago I was diagnosed with fibrocystic breat disease. For the last six months I have been having a dark liquid oozing from my right breast nipple. My breast specalist performed a test that screened for blood. It was positive. He then did a needle aspiration of a 3 centimeter cyst he found just behind the right nipple. The liquid was totally blood.  After my doctor aspirated the cyst, he could not find it on a subsequent sonogram.
He then sent me for a diagnostic mammogram. It took two weeks to get an appointment. During the two weeks, the leakage started again. The mammogram technician indicated he saw a benign growth at the 11 o'clock area near my nipple.
I am now scheduled for another visit with the breast specialist on Oct. 31.
Should I be concerned? I am trying not to panic, but it's hard not to. So far I am not getting any answers as to why the cyst the specialist aspirated returned so quickly. Any advice?

[CCF-RN,MSN-rf]

Dear Mamareport:  Sometimes, when cysts are aspirated, they disappear.  Other times, the fluid, may continue to be produced.  Cysts are often left alone when they are not problematic.  However, if a cyst is problematic, it is generally removed.  It would then be evaluated by pathology to be sure it is nothing more concerning.  It sounds like this may be the best option in your case.