Can evap lines happen within the time limit?

Took HPT with first urine of the day. Im 12 DPO. I checked my first response prior to see if there was anything on display window. Nothing. So I took test. I stay within the first 3-5 mins of taking test to see. I thought i could see a second line but unsure about evap line or vfl. I then took a flashlight to see the window better and could see something where the second line should be. So confusing.