You may have a case. There are several things to consider, and a lawyer will help you sort them out. Issues in medical malpractice cases include whether the doctor was negligent in treating you. Another issue is whether you suffered harm as a result. You should be able to consult with a medical malpractice attorney for free, which I would suggest doing. Find someone who focuses their practice on medical malpractice -- they are more likely to know whether you have a case.
I am not licensed in KY, and can offer you only general advice. In order to prove a claim of medical negligence you must prove that a deviation from the standard of care caused you significant and permanent damages. I am not certain that leaving a clip in during the removal of your gallbladder is a deviation. I have handled a few gallbladder cases. There may be a reason to leave a clip in place (it may be necessary to prevent the flow of bile from emptying in your abdomen. One quick way for you to find this out is to ask your surgeon.
I also agree that a local lawyer who handles medical neglgience claims will be better able to answer your questions. Generally claims like yours are litigated for several years and require the expense of medical expert testimony.
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