Can a faint line get darker over time?

Mariam

Im so confused whether I’m actually pregnant or I’m dealing with a evap line. So basically I took a test the day before yesterday and it had the faintest of faint line but after about 30 mins it got a little darker. The next day I took another test and the faint line had gotten darker but it was still pretty faint. I went to sleep and when I woke up this morning it was wayyy darker. I just took one this morning and there’s a faint line on it as well but slightly darker than the previous ones.. I know I’m not suppose to read tests after the 10 min mark but there was a faint line 3 mins after taking the test and the weird thing about these lines is they have color and are the same width as the control line. Evap lines are usually gray and colorless. I have 3 tests sitting in front of me that say positive but I don’t know if I believe it lol. AF is due in 6 days so I’ll know for sure then. I’ve been having many pregnancy symptoms as well. The photo doesn’t capture the lines or the color very well but it’s a lot darker in person!