Line not getting darker ! Please help

lacey

Line has not changed the last 3 days! - it’s not getting any darker. it’s the same darkness at 12 dpo( the second test) as you can see, From day 10-12, it made a huge jump in 2 days.. and then it majorly slowed down. As you can see here... the bottom one is from today (15 dpo).

what do y’all think. I know I’m freaking myself out peeing on the stick every morning.. but I can’t help it. I just wanna know if this will be a viable pregnancy or a chemical! I have my first blood draw tomorrow ..

Does this look similar to anyone’s else chemicals....