Pregnancy test

My period is expected today but haven't gotten it yet. I've been feeling nauseous this whole month so decided to take a pregnancy test. I'm not sure if I'm seeing things but is there a faint line there? Can this be a positive? How long should I wait to test again? What test do you think is the most accurate and would give me accurate results the day of my expected period? This test I used was clear blue rapid results.