hi, thank you for providing the brief history of you. Since you mentioned you had a direct impact onto the knee and your shin and foot are sore, you need to first rule out if any old fracture is present or any bony malalignment. this can be ruled out by a CT/MRI/X-ray. you said you exercised alot, but what exercises you performed is important. You even had a fall on a concrete, So the impact will be big enough. As bone is a hard tissue and muscle is a soft tissue, the impact will be varied by landing on the muscle and different from landing on the bone. Once your X-ray/CT/MRI shows all fine you can look ahead to next step or else you need to strictly follow the ortho guidelines. For time being i can only say to do hot water fermentation until you visit the doctor. Self medication and self healing is not advisible as specialist can help better. There is nothing wrong taking their opinion. With the grace of god i wish you a great health. Regards Jay Indravadan Patel