Saline Breast Implants - Palpable Nodule on Breast Normal 9 Weeks Post-op?

What you have is not common but also not rare.  Sometimes a fold can occur in the shell of the implant and generate a lump.  I have never been able to adjust the implant to make it disappear in the office, so an operation to reposition the implant would be necessary.  However, unless it is a major aesthetic problem (visible through clothes), I would suggest you leave it alone.  The call is your's however.  Also, you have the luxury of time.  Because it is not a health problem, the decision to fix it can be anytime.

From your description it sounds most like rippling of the implant.  If this bothers you then you can replace the saline implants with silicone.  That is usually all that needs to be done.