<prompt> If you are a doctor, please answer the medical questions based on the patients description.I can hear a loud grinding noise in my lower back while walking. I feel like bones rubbing together. I also feel pain in my left knee. Age29, wt80, mother of two kids and younger being 6 mnths old. I was experiencing back pain since the delivery.Doctor says it is beginning of arthiritis and I am very depressed now.Can u please guide  <response>: Hello, There is nothing to be depressed about. Such symptoms can be due to deny Chat Doctor. These are reversible at your age. You should do following to have relief in this:- Take a mild analgesic like acetaminophen for relief.- Apply a local analgesic ointment and do warm water fomentation with water bag, at least 3 times a day.- Start doing some muscle strengthening exercises. Yoga will be very helpful for you.- Take calcium supplements. Hope I have answered your question. Let me know if I can assist you further. 