Hello,
It is very unlikely that the wart will move inside the urethra. In 90% of cases, the body’s immune system clears HPV naturally within two years. But, sometimes, HPV infections are not cleared and can have HPV even if years have passed since he or she had sexual contact with an infected person.
For aldara, In the morning, wash off the medicine with water and a mild soap.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.