hard to heal wounds

[Jane F.]

I'm really worrying about my foot: I've walked barefoot on the beach and stepped onto a sharp stone and am having a small wound which I can't heal for a week!!!
Should I see my doctor or there are some aids I should try to help healing?

[healthy&fit]

there's plenty of information on the feet ulcer treatment here:
http://www.diabetic-md.com/index.php/foot
and here:
http://www.patient.co.uk/health/Diabetes,-Foot-Care-and-Foot-Ulcers.htm