What does a sharp pain in the heel of my foot indicate ?

Plantar fasciitis.: The most common cause of heel pain is plantar fasciitis: an inflammation of a thick band of tissue that helps hold up the arch of your foot. It attaches to your heel bone, and is usually the most painful for the first few steps in the morning, or after sitting a long time and then standing quickly. See your doctor to rule out a stress fracture.

See a podiatrist: It can be due to a number of things- plantar fasciitis, achilles tendinitis, bursitis, stress fracture, arthritis, or tarsal tunnel. The right diagnosis is necessary to properly address this. Unti then try some runner's stretches, making sure shoes have good arch support and cushion, and are in good repair. Over-the -counter arch supports can help as well. See a podiatrist if these do not help.

NEED FOR SUPPORT!: Most shoes aren't that bad, usually it's the crummy insoles they come with! there are many possibe reasons (plantar fascitis leaps to mind) that you may have pain in the heels, but try arch supports like spenco polysorb (http://www.Spenco.Com/products/footcare/poly-sorb) and otc anti-inflammatories (like aleve). If these don't help, see a podiatrist.