Does the one step pregnancy test from CVS work and what does it mean if it is one line but the line is not dark is really light?

All pregnancy tests have instructions to them; if you're too young to read them then you are more than likely too young to be having sex. 1 line means you aren't pregnant. 2 lines do. I would suggest a digital one that tells you right on "pregnant" or "not pregnant". The only accurate pregnancy is a blood test or urine test at a doctors. Again, if you couldn't read instructions, you probably urinated on the stick wrong too which caused an inaccurate reading.