You don't get balanitis from anybody--the term refers to inflammation, which isn't contagious or transmissible. The friction from sex could bring it on, though. You should consider trying some over-the-counter 1% hydrocortisone twice a day for a week and avoiding friction. If that doesn't clear you up, you should see a doctor then.
Best.
Dr. Rockoff
Wow! I also had contact with a sexual worker (same experience) and have walked around for the last 2 months with a inflammation of the tip of the penis... also diagnosed balantis.
I have been tested for everything except herpies, and got that done today, if I come up positive i will report back...
my doctor said they dont know the cause of balantis.... could be a correlation..