VAGINAL SMELL AFTER I URINE

[dulahello]

HI IVE BEEN HAVING THIS PROBLEM FOR A LITTLE WHILE NOW IM HAVING A VAGINAL ODOR AFTER I URINATE AND GO AROUND FOR A FEW HOURS AND USE THE RESTROOM AGAIN MY UNDERWEAR HAVE THIS STRANGE SMELL EVEN WHEN OUT I CAN SMELL MYSELF THRU MY PANTS WITH NOT REALLY ANY DISCHARGE JUST A LITTLE DAMP OR WET BUT THEY'LL SMELL NOT FISHY BUT A WEIRD SMELL LIKE STRANGE OLD KIND OF MUSTY SMELL WHEN I TAKE A SHOWER IT'LL BE OK BUT AFTER I URINE A COUPLE HOURS LATER I CAN SMELL MYSELF I ACTUALLY TRIED BUYING 7 NEW UNDERWEAR JUST TO SEE IF THAT WAS THE PROBLEM AND IT WORKED I DIDNT HAVE THE SMELL NO ODOR JUST A LITTLE DAMP IN A SPOT ON UNDERWEAR BUT NO WEIRD SMELL THAT I HAD WHEN WEARING MY OLD UNDERWEAR BUT ONCE PUT ON UNDERWEAR THAT ARENT NEW ONCE I URINE THE SMELL IS BACK THERE IN MY UNDERWEAR DO YOU THINK THIS IS AN INFECTION OR STD OR CAN IT BE THAT I NEED ALL NEW UNDERWEAR I SAY THE UNDERWEAR THAT I'VE HAD B4 ARE  A YEAR OLD WHEN I BOUGHT ALL OF THEM. COULD THAT BE THE REASON? BUT IF THEY ARE GETTING WASHED DOES IT MATTER HOW OLD THEY ARE? I HAVE NO ITCHING, NO BURNING