Evap line or positive test?!

Ci
Hey guys so as of right now I'm 3 days late on my period. Due to having PCOS I usually have irregular periods. I took a test on Monday and BFN I took one today and BFN it wasn't that I looked at it later that I started to see something. Could it be an evap or positive what do u guys think ?? ​top is Monday bottom is today .