Hey. I had unprotected sex in January 2015 with female. Sex lasted for 20 seconds as I was worried and came outside her. Naturally I got checked all tests a month later and all came back negative. However, I do have persistent thrush and dull pain in my testicles and lower back. I went back to the clinic a couple of weeks ago and my doctor prescribed me doxycycline, just in case there was infection. He didn't mention a hit test. I worried that this is HIV related and heard that persistent thrush is a sign. I'm starting to get hangovers in the morning despite not drinking. Should I be concerned? The girl said she was clean but I'm not so sure.