Hi, Welcome to HealthcareMagic Forum.
First get yourself examined by a Dermatologist
so that he can examine you and prescribe a different medication. Your Doctor may prescribe a another anti fungal drug. Wash and dry the affected area. Then, apply a thin layer of the topical agent once or twice a day for at least 4 weeks, If your athlete's foot recurs frequently, your doctor may recommend that you use a medication continuously. Avoid swimming, wearing shoe and always wear sandals until the infection is cleared.
Wish you Good Health, Take Care.