Most pregnancy tests involve having a plus sign show up or a double line on the pregnancy test indicating you are pregnant. If you take this type of test early enough, you will not always have a robust line indicating the presence of a pregnancy. A super faint line can also mean you are going to have a miscarriage; in this situation, the HCG levels are very low and you will have a very, very faint line on the pregnancy test from low HCG levels. Fortunately, a faint line on an EPT pregnancy test or a First Response Test, for example, usually means that you are just in the beginning stages of pregnancy and the HCG level just hasn’t had a chance to develop into a robust line yet. In such cases, buy another pregnancy test and repeat the test in a couple of days. In a healthy pregnancy, the HCG levels double every 48 hours so you can expect a stronger line after a few days.