Candybear is right - PAP smears are just a screening tool and are not 100% accurate.
They can also pick up abnormal cells at a really early stage when it can be fixed.
However it is scary, because there's no denying it could be something to worry about.
When was the last time you had one? If it was in the last few years, bad cancers take years to grow - that's why you're supposed to have one every few years to pick them up while they are treatable.
I hope you can see whoever you need to soon to get this sorted out, because not knowing is one of the worst things!!!