When im usually walking i feel an enormous pain in my feet,and after i can not walk on that exactly foot it happens to me frequently?

It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. It would be prudent to see a doctor. If you are overweight, losing weight is imperative. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drug