could I be pregnant or maybe just faulty test?

Jennifer

so I am suppose to start my period in about 8 days or so but haven't had any symptoms of it coming like I normally do the week before. I decided to take a test since I've been kinda nauseous and having more headaches than normal. when I took it there was a pretty prominent second line but then it seemed to have faded and I was just wondering if anyone else has had this happen and still be pregnant?