faint test

I'm 8 days late and I'm very sick with a lung infection but I decided to take a pregnancy test today and one line came in dark red the other came out faint... Could it be because I'm sick and taking medicine or should I take another test... I was told I had a 2% chance of ever being able to have a baby and we've been trying for two in a half years I don't wanna get to excited but what should I think when this happens... Anyone have a faint positive test and actual be pregnant?