Clearblue issues?

Has anyone ever opend up a clearblue rapid result and there already be a negitive line without even using it yet? I had a positive frer 4 days ago and a positive first signal 2 days ago. I only bought this test to use as the one to tell my husband we are pregnant. But when i opend it there was a blue line across it. Me, not wanting to wait any longer to tell my so, stupidly, used said test anyway and got nothing. Im pretty upset about it. Do i need to worry or was the test faulty? The line did not even change in color after use.