Post Mastectomy cord-like swelling

I had a mastectomy in July, 2010.  There is a hard, cord-like swelling diagonally from  the midline of my chest and across my incision. It aches slightly. I don't see my bs until October. Is this serious?

[Cleveland Clinic]

Dear sjstrader:  This could be many things, including scar tissue.  However, without evaluation, it is impossible to speculate on what this might be.  Since this is bothersome to you, it may be a good idea to call your breast surgeon and discuss this with him/her.  He/she knows your situation and could better assess when you should be seen.