Am I pregnant?

I took a pregnancy test about 12:00 today, right away a very faint thin line can up, I showed it to my boss and she saw it well and then a hour later i took another and it came back negitive, then I took another at 6:00 and it also came up negitve. Could the 1st test be wrong?

[AnnieBrooke]

If they were all the same brand, the first one could have been wrong.  But if you had concentrated urine at noon today (had woken late and not peed yet, or had not drunk any liquids yet even if you did pee) and then had diluted it by drinking some liquids by the 1:00 and 6:00 tests, the first one could have been right.  Home pregnancy tests are more notorious for false negatives (because women test too early) than for false positives, but some brands have been criticized for false positives also.  I would test tomorrow morning with a reliable brand of test, using first-morning urine.