If you have a positive pregnancy test are you actually pregnant?

Most likely yes, you are pregnant or were. I don't think a pregnancy test can read positive without HCG present and HCG is produced by pregnancy. If it is a digital pregnancy test and reads positive you are definitely pregnant. Do be aware of evaporation lines that are gray or colorless. Make sure this positive line is colored. If the positive lines are not all colored you could be seeing the evaporation line which could be misread as a positive.