Hello, thanks for using health care magic It is interesting to know that your x-ray shows no bone damage as bone damage could be severe, causing functional impotence and requires a longer time to heal. Haven ruled out bone trauma and with the duration and severity of your injury, it is more likely that you had a trauma of one of your ligaments/tendons at your knee level. Trauma of ligament/tendon is very painful, swelling almost immediately and taking a considerable time to heal. The duration required for the healing of ligament/tendon trauma is variable and in severe cases can take up to 6weeks before an appreciable healing can take place. In less severe cases a week or two could be okay. However, conditions that favor healing have to be laid down; -adequate rest is necessary i.e. avoiding to use the injured part, -splinting could be done to immobilized -adequate feeding etc. Hope this helps you. Best regards Dr Achuo