UTI's happen.
It's even possible you could have urinated soon before your previous tests and missed an infection. (although I'd shakedown my BF about it)
Anyways Chill out. Whatever you've got: it's treatable and you won't be harmed. In all likelihood it's just a UTI.
Get tested, treated, and you'll be okay. Good luck!
Well before I was tested for my UTI I had been taking cranberry pills to help with the symptoms. So my dr assumed I was partially treated but never have me a definite answer as to what was wrong. It is possible to get a fasle negative for std tests three times? My only symptoms are those of a UTI as well as I now have a missed period. I'm at a loss for what's goin on!!!
If it's a STD then only way is for someone to go outside the relationship.
Both my bf and I have never cheated. I might sound arrogant but I know he hasn't. Which is why I thought it weird of my dr to tell me it could be an std when I haven't changed partners since my last testing.