Hi~
Yep. Happened to me, too. The lab actually helped me decipher that one, not the doc! It depends on what type of test they do. I didn't know there were two kinds of tests. One is a yes/no test but the other is a quantitive test, that just measures the amount of HCG in your blood. Of course, that test is used to tell how far along you are, but that's the one my doc ordered. Anyway, the first test came back negative, but the second test came back with a higher HCG level, so even though it wasn't at the level that they would consider positive...I knew that the only reason the level would go up was a baby! Make sense?? Oh, yeah and Im assuming you are not taking any treatments that would give you a false positive. Just wait a few days and ask the doc for another blood draw. You may very well be pregnant...either way, you'll find out soon enough! :)
~L.