ttc evap line or no

Mandy

took two Wal-Mart cheapest pregnancy test one I took the day before and the other I took the next day the first one doesnt show even after letting it sit over night but the other one shows positive after a few ho

urs dont know if it is a evap line or not. I have Google a few things someome said if

u run water over the test if it's a evap line it will change if not the line will still be there help lol I am confused