The application of the discovery rule will require a detailed review of your medical records and history. The discovery rule is not as simple as when you knew about the potential case. The discovery rule holds that the statute of limitations starts to run when you knew or should have known that you potentially had a cause of action. Your case is clearly more complicated than the summary of facts in your question. You need to make arrangements to meet with a medical malpractice attorney as soon as possible to discuss this issue. Good luck.
Mr. Patterson is correct. You should put all of your documents together, including all medical reports and talk to a medical malpractice attorney in Maryland. I would be glad to review your case.