Took a test yesterday 11dpo and after a min I threw it out there was nothing there, so I thought

Crystal • December 8th baby #2 :)
Took a test yesterday 11dpo and after a min I threw it out there was nothing there, so I thought.  Took another test this morning and within a minute there was a faint line. Looked at yesterday's test and low and behold there was a line. Part of me still thinks it an evap line.