Thank you for writing to JustAnswer with your concern.
There is a condition called Plantar's Fasciitis. It can be an inflammation of the fascia, which is tissue underneath the skin on the bottom of the feet. Often it happens in only one foot, but can occur in both feet. It is usually worse in the morning when you wake up. There are various reasons, it can be an auto immune problem similar to some types of arthritis. You can read about it here to see if all your symptoms sound like this. http://www.mayoclinic.com/health/plantar-fasciitis/DS00508
Since you are young there may be more things you can do to keep this from turning into the full blown problem. If you have a lot of stress in your life this will make these types of physical problems come on quicker. I would seriously evaluate if this is an issue in your life. I have a good web site that may help you identify if this is an issue for you, if you are interested. http://www.helpguide.org/mental/stress_signs.htm
If you have questions please feel free to reply.