I have slight raised swelling around the opening of my penis that seems to flare up after oral and vaginal sex. I have recently been treated for epididymitis with Levaquin and had been on Doxycycline for acne for two months prior to this. I do not have any discharge and I have not had any frequent urination problems either. There is occasional itching at the opening that comes and goes. Does this sound like Chlamydia or Gon? Is there any other cause for this?