confused !!!

I took a test Tuesday morning. I was too tired to wait for the results so I went back to sleep. an hour later I looked at it and it had 2 blue lines. control line was dark and test line was dark but not as dark. ((it has faded since Tuesday but still there))... I went to the clinic the same day and their test was negative. I took a cheap test today and it was negative as well. AF is supposed to start tomorrow.