Help! I have done around 10 tests. I am not quite late with my period yet but I have had some pregnancy symptoms. However the second line on my tests are very faint I am concerned they may just be evaporation lines. The test's I have used have pink lines to show the results. The second faint line is pink but only shows after about 10 minutes. This has happened with all 10 tests. One was a different brand but still had a very light line. I tried one with tap water. I got the negative line but no second line. So confused