Beyond furious

I had my first initial appointment late March and tested negative for every STD.. I was having lower back pain this past Saturday thinking it might be a kidney infection.. they take my urine at a urgent care and don’t put my name on the UA.. urine analysis came back perfect! But they did a send out and it said I had moderate Ecoli and Trichamonas.. so furious and confused I lashed out on my partner I was devastated.. as I am 12 weeks pregnant.. I made an appointment with my OBGYN to get retested (my results have not came back). My partner got tested and he is negative we have unprotected sex all the time obviously I am pregnant!! Which only leads to one thing.. they switched my urine culture with someone else’s.. my results should be back in soon! On top of that they gave me a medicine that could hurt my baby… I didn’t take it because my obgyn said not to. What would you do in this situation?