2 days ago i started a job and walked a lot More than usual i walk. After that i started getting pain in my knee and when bending it hurts. I thought it was just tiredness or just coz my shoes were a bit heavy (i wore dr martens on that day) and would go away but i still have it. In the morning it was mild and the more i walked the more it hurts. When i bend the leg it makes hurt the thigh muscle and the knee. Its only the right leg. Could you give me an idea of what it might be? The pain in the knee it feels like its coming from the central-right part of the knee. There s no swelling or clicking.