K.N.
couple of things, first, you can't get a faint negative, if you are getting a plus sign or two lines, even if the second line is super faint you are in fact pregnant, the line will get darker as more of the hormones build up, could just be that it is really early. Second, a normal cycle doesn't mean 28 days, if you are having a 32 day cycles it is always about 32 days that is still a normal cycle. 28 days is just the average.
Oh and someone mentioned a digital test, generally they need more hormones in order to show a positive, so they are more likely to give you a false negative if you are testing early.