The fracture wouldn't have healed properly that's the reason for you to have pain
while you started walking. Generally lower limb takes more time to heal
as the entire body weight is taken by the foot. It is important to wear MCR chappals as it distributes the weight evenly and it makes the foot to feel less pressure. You can take good Iron supplement, calcium and vitamin D which will help you to have quick
recovery and also it helps for quick healing and recovery. You can do hot water fermentation will help to reduce the inflammation and it helps to have better range of motion. If you practice this way it will not hurt your foot any more.
That might be due to knee pain
or it might be due to ankle pain. Our suggestion would be to do hot water fermentation along with Cold (ice) therapy. You shall also keep a pillow under the knee while sleeping, next is you can keep ice in the painful area for about 5--10 minutes.