Very thin faint line could I be pregnant?

Light line means that the analysis was carried out early and the concentration of the hormone that pregnancy or a little weak or the sensitivity of the device a few.

By the way light line is often a positive result if it appears during the period Almsrahp to conduct analysis
so if u want to make sure Analysis was conducted the morning when you wake up from sleep because the hormone hCG to be in the center of the sample.