i have a tickle in my penis that makes it feel like i have to urinate. it is pretty constant. there is no discharge. i took a round of azithromycin and it has not changed. i recently experimented with urethral sounding (inserting a clean, sterilized rod into my urethra about halfway down the length of my penis) which i now seriously regret since it seems very likely to have caused this. that was over a week ago. is this likely to simply be irritation from that? if that is the case is there anything i can do to treat it? any idea how long this might last?