How would I really know the difference between the two I took a test 4.days before period was due as the week before had random spotting that was literally there once when wiping that test came back negative the 3days after my period was due I took another test but was later in the day and I'm sure there's a faint line not sure if it's a faint positive or evaporation line as I'm now 4 days late for my period was going to wait another 4 days and test again any advice would be appreciated x