To start off with I would like to say that I am extremely dissapointed in the health care providers mentioned by you.
To start off with, the next time you havr such a presentation (and if it is present now), please request for a urine culture and sensitivity examination along with a vaginal swab test (a culture of the same) will be required as well.
Your presentation resembles that of an infection, so I would concentrate on the two above investigations. Try to produce and early morning urine sample and not one taken any other time during the day as this would be more diluted and would yield and inaccurate result.
You may also go ahead with a pap smear
and a transvaginal ultrasound
scan (TVS) to follow the first two investigations.
Hope this helps.