Positive Home pregnancy test but the doctor say otherwise


So just recently I took 3 Digtial Clearblue (I spaced out the time that I took all 3) tests well to make sure it was true I had scheduled a doctors appointment later on that day. So I get to the doctors office and I take a test and it comes back negative this answer not only confused me but made me sad. I waited a few days and got 2 cheap tests this time I spaced them out a day apart and both once again came back positive. Has anyone else experienced this I'm so confused. I have an appointment this coming Wednesday but I want to see what other women have experienced. HELP!!!