LAST WEEK I HAD SEX WITH MY BOYFRIEND, HE HAS BEEN MIA FOR THE PAST 3 WEEKS,BUSY WITH WORK..THE FOLLOWING MORNING AFTER SEX WHEN I URINATED, I FELT A BURNING SENSATION, I IGNORED IT THINKING IT WOULD SUBSIDE, BUT IT HASN'T SINCE THEN IM NOTICING SOME ORDER AND ITS STILL BURNING WHEN i URINATE, ALSO MY URINE HAS A VERY STRONG ODOR. WHAT COULD THIS BE?