Back in April, I had some unprotected sex with a female. 2-3 weeks later, I developed an intense burning sensation with urination. The burn was almost crippling. I went to the hospital. After swabbing and taking my urine, they informed me that it may very well be chlamydia gave me a shot and four pills. All was well. Few weeks later, a burn returns. However, not nearly as intense. I went back to my PCP, he gave me another round of four pills and a ten day supply of another antibiotic. I took both in their entirety. All was well. Fast forward a few days ago. I now have some slight urinary discomfort (teetering on the borderline of burn . However, not really bad and not all of the time. Note, I have not had ANY sex since back in April. What could be the issue? What would the chances of an STI/STD coming back TWICE with no exposure? Thinking about this is affecting my social interactions.