About 7 months ago I noticed a burning sensation when urinating, went to the dr, did a urine test and was given some antibiotics and the problem was relieved. Then about a month ago after 3 or 4 days straight of ejaculating, I noticed the burning came back more intense and the urge to pee, thus I went back to the dr and was given doxycycline and took it for about 7 days but stopped because of the side effects of reflux. About 5 days into it, I noticed I was feeling better. Then a week later, I was in the middle of masturbation and stopped, fell asleep and was awakened with a great urge to pee and very intense burning. I thought maybe if I finished what I started it would help and it did feel better but the burning sensation has subsided but not completely gone away after a week, as well as the frequent urge to pee. There is no pain after ejaculation or during and no pain when peeing. And no STD's What could this be?