It is common to experience changes in joint health over time. Penidure (benzathine penicillin) is typically prescribed to prevent rheumatic fever recurrences rather than treating arthritis itself. Your current symptoms of morning stiffness, leg pain, and joint cracking require a fresh medical evaluation, as they could indicate a different joint condition like osteoarthritis or a new inflammatory issue.I highly recommend consulting a rheumatologist for a proper diagnosis. For temporary relief, you can use over-the-counter options like paracetamol or ibuprofen, alongside warm compresses and gentle stretching. Please do not worry, as these symptoms are very common and highly manageable with the right treatment plan.