I am a 59 year old male--recently after taking some antibiotics--I noticed frequent urination. Then I noticed a red rash on the inside of the foreskin of my penis. Then large clear blisters filled with clear liquid appeared under the foreskin and on the head of my penis and some swelling in the skin near the head of my penis occured. This has been ongoing for a couple of days---I have begun using some Monistat7 that my wife keeps for yeast infection and the itching and soreness seems to be subsiding as well as the swelling. Should I be overly concerned--half inch clear blisters on the penis can prove unsettling!