My urine smells like poo what does that mean?

Have urine tested: If urine doesnt smell right. Go to your doctor and have it tested. Urine is normally sterile and doesnt have a particular odor.

Foul Smelling urine: The fact that your urine smells bad could be secondary to yo.ur diet or any medications or that you have a recto-vesical fistula which is very unlikely at your age. Need to be evaluated by your gynecologist

For how long?: There is actually a possibility that you can have a connection between your urinary tract and your GI tract although that woud be a serious problem. Also urinary tract infections can cause foul smelling urine. Vaginal infections may also be foul smelling. All and all it sounds like it is time to see the MD