The chances of getting a false positive are next to impossible. False negatives are common, false positives are the stuff of teenage television dramas.

Do the test a couple more times and if it is still coming up positive ,d you are a single woman and the boy won't marry you , get on the next plane out of Doha, because if you go to a doctor for a blood tst they will ask your marital status and if you are pregnant they are required by law to report you to the police.