It is very highly unlikely to get a false positive (although quite common for false negatives), but all pregnancy tests are fallible. Also, if it is a very faint line, it is more likely to be a false positive (note that even faint lines should be considered positive). Try testing again. If it's positive again this time, I'd say you're definitely pregnant. The odds of having two false positives are EXTREMELY slim.
at 1:05 PM on Jun. 24, 2011