Clearblue digital?

I just took a clear blue digital.....and I had barely dipped the tip of the stick and it said not pregnant. Is that accurate?

The instruction say to leave it be and wait for it to load but it said it immediatly it touched my urine. Iv used one before and I thought it had a sand clock looking thing on it while it read it sample.

Dint even dip it all the way so how could it have read it ?