False negative - CB Digital?

muksak

here is a picture of my "Not pregnant" clear blue digital test. This is with 6pm urine.

I am 4 days late with no real symptoms other than peeing a lot.

I read peeonastick.com and there seems to be issues with the sensitivity of this test.

Anybody else have issues with this test? I am going to pick up some pink dye ones tomorrow.  

 http://im1.shutterfly.com/media/47a2cf29b3127ccef1c54c32fef700000030O00AauGrFq0YtmYPbz4U/cC/f%3D0/ps%3D50/r%3D0/rx%3D550/ry%3D400/