Hello, I have not been diagnosed and haven't seen a dr. I'm worried that I may have arthritis, I am getting pain in the knees and the back of my ankle. My knees make very strange noises, like crunching/grinding noise and are painful. My mum heard it the other day and said that it sounded just like how my grandmothers knees were. She suffered from Rheumatoid arthritis. Doe's this sound like something I may have?