This might help to put your mind at ease too

The positive line is really faint. Is this okay? An HPT tells you exactly one thing: your urine either has detectable pregnancy hormone in it, or it doesn't. The darkness or lightness of a line doesn't mean much. Generally speaking, a very light line can mean there is a small amount of hCG in your urine, and a very dark line can mean there is a larger amount of hCG in your urine. This is why you may get a faint positive at 10 DPO but a darker positive at 18 DPO. However, this is not always true. Tests are all different, and even tests in the same box may differ in sensitivity. Comparing light/dark lines will just drive you nuts. If you see a line in the "results" window, you're preg!