Positive Digital Test, then Negative?

[aquarius aspiring]

{EDIT: Not sure where to put this post?}

I think I'm going crazy here. My period is four days late and I've been nauseated for the past week or so. I've also had light cramping for the past four days and lots of clear cervical mucus, which is unusual.

I tested with a First Response Digital test and it was positive! This was about 5pm yesterday. I then took an identical test about fifteen minutes later and it was negative. I took another test an hour later and it was negative. I took yet another test the following morning with FMU and it was negative.

I went to the doctor this afternoon and the urine test was negative. The nurse took some blood and I'll find out the results tomorrow.

Has anyone gotten a positive on a digital test and then a negative? If so, were you pregnant or not? I have a sinking feeling that I'm not pregnant, but I just want to make sure.

[MaerynPearl]

well there are several reasons why this could happen

the least likely is that it was a false positive

second least likely is that you had a chemical pregnancy

now of the two MOST likely scenarios... they are both pretty similarly likely:

1. If you did not take all of the tests in the same urine, I would assume your first positive was correct and all of the others were simply more diluted urine.

2. Same brand, same box... can STILL have different sensitivities. If you dipped them all in the same urine, this is the likely culprit.