3 days ago I took a pregnancy test and it came back positive, however I didn't dip the test in urine I peed on it so urine would have gone over the max line. The positive line came up instantly. Straight after I re done a test by dipping it in urine and it was negative, followed by 2 more negative tests. Both days since all tests have been negative. Today I weed on a test strip again and it was positive, again it came up instantly, are these false positive or is the test just picking up a more concentrated about of urine than dipping? I'm thinking it would only go red if it detected HCG but now I'm questioning that really it's a false positive as I've only had positive tests when it's done in this way, and technically this isn't following the instructions of the test. I am due on yesterday.