Stronger lines?

Hello beautiful women! I have taken 2 tests recently because I can’t stand waiting and not knowing. I am in the middle of my TWW. The 2 tests I’ve taken have very faint lines after the 3-5 minute wait. But when I check it hours later to see if I was imaging things, the lines have gotten stronger. Are these faulty tests? Or are they BFP?! I’m supposed to start my cycle next week and I’ve told my husband I won’t take a test until I’ve missed. I’m trying to keep it a secret from him. I want to surprise him when I do tell him, so I can’t ask him for advice. What do you guys think?

UPDATE: I should have added this picture too. This is the first test within the time frame.