Hey congratulations!

False positives are very rare, you sometimes get evaporation lines, but that's not possible with a digital - if it's the kind where you can eject the stick, and you DO eject the stick, you will see two lines on it. I actually know someone who's digital said NOTPREGNANT but when she ejected there were 2 lines, but the second was faint - 2 days later she got a PREGNANT.

Was your last period normal for you? It wasn't lighter or shorter than normal?

Bx