I swear, some of my colleagues would not have graduated medical school if they answered test questions like they answer these without carefully reading first! (Had to get that off my chest.)Your implants are 43 years old, and though you did not say, presumably asymptomatic--until 2 weeks ago. Then you develop a new pain below your left breast. You do not say if there was any trauma or other inciting event. Except for being in the vicinity of your implant on that side, there is no correlation that you describe. A good physical would involve detailed questioning about activities that could have pulled a muscle, or perhaps damaged an implant, but other than location, there is nothing to suggest that your pain and your implants are related to one another. If you didn't have implants and developed this pain, what would you do?That's what you should do right now.However, 43 year-old implants are thin-walled and easily damaged, but leakage and development of capsular contracture would announce itself with hardening of one or both breasts. However, I have seen many women whose CC developed so gradually over years that unless they examine other women's breasts or see what normal breasts look like in a locker room, a woman with significant CC may not be aware of its severity.Go see an ABPS-certified plastic surgeon for peace of mind (or appropriate comment on your 43 year-old implants), but do not ignore pain of unknown origin if it persists or worsens. You may need to see your regular physician first. You will be asked to answer more than "worst pain I've ever had" and its location. And be wise to look further than old breast implants. Best wishes! Dr. Tholen