Left Armpit Discomfort/Sensations

Hello
For the past several months I have been experiencing an uncomfortable sensation in my left armpit ... upper area toward the breast.  Not necessarily what I would desribe as painful... but moreso what one feels if you keep your arm extended upward over your head for too long a time ... that fast warm thick tired feeling in one area.   My left breast also has a tendency to leak spontenaeously, from that side only, clear and only a little bit at a time.  Fairly often (every other day or so) and never can I make it happen on my own.  Would the 2 things likely be related?   I had a Mammo in December that came up clean (sensations began afterward) and the leaking has been ongoing for approx. 1 year.  Dr. has been consulted re leaking at first occurrence but nothing was pursued as it is suspected it may be a fibrocystic change.  I also have a simple cyst in the left breast, also noted 1 year ago.  Is the armpit discomfort something that needs to be worried about and/or addressed?
Thank you for your time ..

[CCF-RN,MSN-rf]

Dear OhNelly2:  Without examination, it is not possible for us to speculate on what is causing your discomfort.  Certainly, it could be from many things.  As this is ongoing and the breast discharge has been going on for a year - but only evaluated at the first occurence, it may be reasonable to have your doctor take another look.  Then he/she may be able to make appropriate recommendations.