Ive had some kind of infection or something on my the tip of my penis for two months he called it derma somthing and Ive been to the doctor 2 times and both times he prescribed me Omnicef 300 mg and the second time Keflex 500 mg and Nystatin Cream and once I called and he gave me another week of Keflex. The redness went away the whole time I was using antibiotics but like the other times once Im through taking the medicine 5 days later it returns as a pinkish rash. The doctor has almost given up and I cant afford to go back to the doc all the time. My wife has metrogel-vaginal 0.75% and its never been open the catch is it was prescribed to her on 2/13/2004 is it still ok to use?