I had taken 2 covid-19 pcr tests in the same day and one of them came back negative and the other came back positive. i also had a negative rapid. which do i believe?

Have NO clue, why you would have 2 or 3 COVID-19 tests in one day, but the PCR testing is far more accurate than the rapid, and a positive test is considered consistent with infection. Would quarantine, for at least 5 days, based upon the latest CDC guidelines. If you develop increasing symptoms, contact your physician.

The tests can have false positives, but any positive should be considered confirmation of COVID-19. Treat symptoms,rest, drink fluids and self isolate. Watch for signs of shortness of breath and please follow up with your physician.