Hi there...try to calm yourselves first. Unfortunately you haven't mentioned after how many days of unprotected sex, she got the urine
pregnancy test done. No need to worry. urine pregnancy test usually becomes positive 6-10 days after sexual contact. So it is usually done 10 days after missed regular period. Also urine pregnancy tests are 99% accurate. There is a chance of false positive. So it is better you consult a obstetrician as soon as possible for further tests.