Try retesting in a few or after the day your period should start (if you miss it)
dont get a blue dye test. get one with pink dye!
get clear blue the one that tells you how many weeks x
The blue dye detects pregnancy earliest and also detects chemical pregnancies. I would wait a few days and retest. Faint lines can be evap lines, early detection, or chemical.
retest with first response, they are the best tests to use in my opinion!!