I'm not sure which brand test you are using, but it sounds like you are misreading the results to me. I've never seen a test that has a "negative" line. The new digitals do say "negative" but every line style test I've ever seen has a control window and a result window. The line in the control window always shows unless there is something wrong with your test- like you didn't get enough urine on the tester. Then there is the result window. If there is ANY line in the results line you are pregnant. Faint, not quite the color shown on the box, all lines in the result window equal a positive test. If using the test with a plus or minus sign, the minus sign is essentially your control window the line going up & down is your test line. So again, if it looks like a plus sign with a light line top to bottom, it's a positive too.