I twisted my foot 3 weeks ago on a rock. xray shows no fracture but likely tendon and ligament damage. i am unable to walk properly without pain. ?

Another xray: may be indicated as some fractures don't show up immediately. If you are unable to walk after 3 weeks while taking good care of yourself otherwise, I would recommend this.

Book in to see GP: Hi, sorry to hear this. Most simple ankle sprains are at least starting to improve by three weeks. I would book in to see your GP. Repeat clinical examination is needed as a minimum to look for signs of other problems such as a fracture, peroneal tendon problem or cartilage injury. It could be that further X-Rays or an MRI scan are required depending on what is found. Hope it settles soon.