Can trichomonis cause a false positive urine test?

I have received 3 positive urine tests, one yesterday and two tonight. I go to get it confirmed at the doctor today and she says I have trich, which idk how but whatever, and she did my blood work and stuff. Well she calls me later and says it was negative and that trich can cause false positive urine tests. Is this true? I can’t find anything on it causing false positive test results. I was due for my period the 29th but it didn’t show. Is there a chance I’m still pregnant and the blood test was faulty? Or am I not pregnant? I have been trying for five months.