3+ yrs out-getting new nipple nerve type pain? Exercise related?

Anonymous

I had a nipple sparing BMX in Nov 2010.  I remember that docs saying that nerve regeneration will happen and I may get nerve "zapping" type of twinges in the area for a couple years. 

Well it's now coming up on 4 years and all of a sudden I'm getting daily zapping like pains (hate to say "pain" because it isn't really painful, just odd discomfort) underneath my nipple on my bc side only.  I know they really "scraped out" the tissue under that side to test for cancer so it makes sense it could only be happening on that side.  However, I'm curious as to why it is happening so much now?  The only thing I've done differently is that I'm taking an exercise class that does upper body work...including some pec work.

Just wondering if anybody has had similiar sensations this far out....and whether or not it is necessary to be "safe" and see the doctor?... ... which one would I see anyway?... I'm assuming the breast and/or plastic surgeon?  I don't feel any lumps... I don't get mammograms because of the BMX... my MO and GP feel me up every 6 months or so.  I wouldn't think a recurrence would zing like this anyway.  But sometimes you can't help but have your mind go there?   If I didn't have such a huge deductible, I  would probably just go see the doc.