Should I wait and retest?

I took 2 equate brand hpt about a week ago and I had gotten a very faint positive on both tests. I retested (today) 2 of the hcG hpt from dollar general and both showed up negative. I'm not suppose to get my period for another 5 days.. Could have I gotten a false positive on the others? Or is it still to early? Btw I heard even if you get a faint positive line it still could mean your pregnant.