I tested multiple times a day for a few days because I could have sworn I was going to ovulate (cd days are wrong obviously, I have no idea where I am in my cycle). My tests stayed dark but not quite positive then lightened so I was so confused. Today I took my test and barely glanced at it because I was expecting a faint line and bam, as dark as the control line. So just keep testing if you are feeling discouraged! Mine clearly followed a weird path to get to positive so sometimes line progression doesn’t mean a whole lot (and sometimes it does!).