Thank you for the question and over time your breast may have thinned over the implants making them more palpable and the implant sac may have stretched over time making the bag also more palpable. There also could have been a small leak at the valve area that has now sealed itself. Either way thee is no immediate need to change your implants unless you are unhappy with the look of your breasts.
Dr. Corbin
www.thebreastexpert.com

Frederic H. Corbin